Fix AIOOBE.
Extracted interface for tabs component.
Tabs processing refactored a bit.
Limit tab names by 50 characters.
Merge remote-tracking branch 'origin/master'
Next tab and Previous tab actions.
Check enabledSupplier before perform.
Fix NPE when pasting an empty buffer

Right-click paste is grayed out when buffer is empty, but middle button
paste is still available
Merge pull request #2 from Plonk42/paste_npe

Fix NPE when pasting an empty buffer
Tabs processing changes.
Fix removing terminal tabs on drag'n'drop.
Fix closing tab on session end. Fix popup for editor terminal tabs.
Merge pull request #75 from traff/master

Fixes and tabs refactoring.