Fix homes retrieval when there's no "share_home_list"

[hbeaufils]

• Ensures that the gethome response is processed correctly when there's no share_home_list attribute.
• Add an explicit error log when no device could be found using the provided token from configuration.

Relates to #510
Probably fixes #583

Previous outdated PRs:

• Fix homes retrieval when there's no "share_home_list" #589
• Fix homes retrieval when there's no "share_home_list" (for "dev_extracted_libraries" branch) #590