reworked base skeleton and decoupled components
Removed redundant typecasting
Merge branch 'gui' of https://github.com/DrJJ/watdo into jolly/gui
Hooked up Main#showSidebar with SidebarController
changed text field background colour and prompt text
Linked Sidebar.fxml components fx:id with SidebarController
Merge remote-tracking branch 'origin/gui' into jolly/gui

Conflicts:
	src/app/Main.java
Added event handlers to the buttons
got InputFieldController connected and working
Moved Sidebar styles to a stylesheet
implemented enter and tab commands for inputfield

enter now prints command
tab is now intercepted
Merged Jolly's changes and fixed conflict
Merge pull request #35 from DrJJ/gui

Completed inputField and sidebar components