Resolve "Sidebar limitations if names (for groups, databases and tables) get longer"

Merge Request Checklist

• changelog.md has been updated if required
• New/updated Premium features are separated correctly in the premium folder
• The latest Chrome and Firefox have been used to test any new frontend features
• Documentation has been updated
• Quality Standards are met
• Performance: tables are still fast with 100k+ rows, 100+ field tables
• The redoc API pages have been updated for any REST API changes
• Our custom API docs are updated for changes to endpoints accessed via api tokens
• The UI/UX has been updated following UI Style Guide

Closes #986 (closed)

Goal:

• simplify the way to distinguish between application / tables with long and similar names.

How:

• As suggested in the issue discussion, this MR add a :title attribute to the application name and to the table name in the sidebar.

Testing points:

• Hover application and table names and see that a tooltip is shown with the full name of the application/table.