diff --git a/src/themes/default/package-lock.json b/src/themes/default/package-lock.json
index d3e12ac..63647dc 100644
--- a/src/themes/default/package-lock.json
+++ b/src/themes/default/package-lock.json
@@ -206,7 +206,7 @@
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-          "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
+          "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
           "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
           "dev": true,
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@@ -228,12 +228,20 @@
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-      "resolved": "https://registry.npmjs.org/async/-/async-2.6.1.tgz",
-      "integrity": "sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==",
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/async/-/async-2.6.4.tgz",
+      "integrity": "sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==",
       "dev": true,
       "requires": {
-        "lodash": "^4.17.10"
+        "lodash": "^4.17.14"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.21",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+          "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
+          "dev": true
+        }
       }
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@@ -604,7 +612,7 @@
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-          "resolved": "http://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
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@@ -613,19 +621,19 @@
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-          "resolved": "http://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.13.tgz",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.13.tgz",
           "integrity": "sha1-H4irpKsLFQjoMSrMOTRfNumS4vI=",
           "dev": true
         },
         "ms": {
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-          "resolved": "http://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
           "integrity": "sha1-nNE8A62/8ltl7/3nzoZO6VIBcJg=",
           "dev": true
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         "qs": {
           "version": "5.2.0",
-          "resolved": "http://registry.npmjs.org/qs/-/qs-5.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/qs/-/qs-5.2.0.tgz",
           "integrity": "sha1-qfMRQq9GjLcrJbMBNrokVoNJFr4=",
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@@ -675,7 +683,7 @@
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-          "resolved": "http://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
           "integrity": "sha1-IDEU2CrSxe2ejgQRs5ModeiJ6Xs=",
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@@ -1006,7 +1014,7 @@
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               "version": "0.1.6",
-              "resolved": "http://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
+              "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
               "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
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@@ -1026,7 +1034,7 @@
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-              "resolved": "http://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
+              "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
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@@ -1742,7 +1750,7 @@
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-          "resolved": "http://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
           "integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs=",
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@@ -3214,7 +3222,7 @@
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-      "resolved": "http://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
+      "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
       "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
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@@ -3262,7 +3270,7 @@
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-      "resolved": "http://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
+      "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
       "integrity": "sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=",
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@@ -3996,7 +4004,7 @@
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-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
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@@ -5042,7 +5050,7 @@
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         "iconv-lite": {
           "version": "0.4.13",
-          "resolved": "http://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.13.tgz",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.13.tgz",
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@@ -5072,7 +5080,7 @@
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         "pify": {
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-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
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@@ -5211,7 +5219,7 @@
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             "is-accessor-descriptor": {
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-              "resolved": "http://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
+              "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
               "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
               "dev": true,
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@@ -5231,7 +5239,7 @@
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             "is-data-descriptor": {
               "version": "0.1.4",
-              "resolved": "http://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
+              "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
               "integrity": "sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=",
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@@ -6085,7 +6093,7 @@
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     "supports-color": {
       "version": "2.0.0",
-      "resolved": "http://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
       "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
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@@ -6155,7 +6163,7 @@
       "dependencies": {
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-          "resolved": "http://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
           "integrity": "sha1-+HBX6ZWxofauaklgZkE3vFbwOdo=",
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@@ -6164,13 +6172,13 @@
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         "ms": {
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-          "resolved": "http://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
           "integrity": "sha1-nNE8A62/8ltl7/3nzoZO6VIBcJg=",
           "dev": true
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         "qs": {
           "version": "5.1.0",
-          "resolved": "http://registry.npmjs.org/qs/-/qs-5.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/qs/-/qs-5.1.0.tgz",
           "integrity": "sha1-TZMuXH6kEcynajEtOaYGIA/VDNk=",
           "dev": true
         }