Removed duplicates, and indentation checks.
If a Scene is updated, make it the selected one.
Fix bug where an old tab instance was not replaced by a new one.
Grid borders had some space between them if their width was not a whole
number.
Removed unused imports in Border.
Corrected imports and removed logging in BorderActor.
A loop kept locking the thread if a file was not selected. The loop will
now end when the file selector closes.
Merge branch 'develop' of https://github.com/Visualista/Visualista into develop