Remove an 1px border of tab label
Merge pull request #241 from ikarienator/EditorLayer2

Removes an 1px border of tab label
Remove dirty flag changed event as it`s not used
Merge pull request #242 from ikarienator/EditorLayer3

Remove dirty flag changed event as it's not used.
Improve tab view
Merge pull request #244 from ikarienator/TabViewImpr

Improve tab view
Merge branch 'master' into context-menu