mark 2.6.0 release

Author: mKowalski256

pom.xml

@@ -7,7 +7,7 @@
   <artifactId>researchspace</artifactId>
   <groupId>com.github.rspace-os</groupId>
   <packaging>war</packaging>
-  <version>2.6.0-SNAPSHOT-${timestamp}</version><!-- appVersionID don't remove this comment it identifies this version -->
+  <version>2.6.0</version><!-- appVersionID don't remove this comment it identifies this version -->
   <name>ResearchSpace</name>
   <url>https://www.researchspace.com</url>