GridLayout in place. Tab View in place with graphics views. Graphics views not yet expanding to fit Tab View. Overall, the application resizes. Staging and Git Data regions currently set to list view. Terminal window in place as list view. Terminal as list view may need to be changed. Still need to add vertical layouts and scroll views.
Merged MainUI onto canvas
Implemented method to convert commitnode tree into gcommitnode tree -- not tested
Neatened up text display inside of node. Created model class for a SHA
General cleanup of ggraphicsscene and gcommitnode