add actions to file menu
add open implementation on FileMenu
add line numbers to RoboScintilla
Open/Save/Save As in toolbar and File menu #131
Add button to toggle line numbers #112
intermediate commit (Implement Ctrl + F in all editors)
start refactoring ScriptWidget
fix openAction behavior
Merge pull request #135 from topilski/master

Add button to toggle line numbers #112
Fixed text line height for Linux.
expand all children #106
Merge pull request #136 from topilski/master

Expand all children #106
Default view mode returned back to Tree mode
Fix for black background color of Search Box in Insert/Edit Document Text Editor
Open/Save toolbar set to be not movable
Platform specific icons for Save/Open actions