Migrated dialog to kano-toolset and refactored
Changed import statements for kano_dialog
Big refactor of code, moved green button and large quanity of CSS to kano-toolset
Migrated Heading class into kano-toolset
Removed heading.py file
Moved top_bar.py to kano-toolset
And moved icons to kano-toolset
Changed the way the green button packs into a Gtk.Alignment
Changed cursor import statement to refer to kano-toolset file
Merge with master
Merge pull request #114 from KanoComputing/gtk-migrate-common-styles

Gtk migrate common styles