Eiffel Intelligence front-end first stable release

What is new?

• A Dockerfile has been added to run EI front-end
• Integration tests added

Improvements:

• Documentation has been updated
• Several dependencies have been updated to newer versions
• Better information in how to add token-based authentication in the gui
• Validation of back-end information when adding back-end instance via curl.

Fixes:

• Multiple user issue fixed. It should now be possible to be logged in to EI with several users using the same front-end webserver
• Error when trying to change name of subscription, subscription name is the key and may not be changed. Name change disabled in edit mode in gui
• User may no longer add second default back-end instance via curl command, only 1 default allowed