Revert "'New file' option in context menu. JSTree folders open by default."

This reverts commit a2bdaba3e7ae411aeae0492ea51a2bbc68b4f5b6.
This is in preperation of a merge with the new UI features branch.
Revert "Projects listed in body of page instead of popup. Moved buttons around to simplify UI."

This reverts commit 45018e8f4508897c1a95f66a8a3a57cae57a052c.
This is in preperation for a UI features merge.

Conflicts:
	src/frontend/css/common.css
Revert "Setting to control page background colour."

This reverts commit 883820585976c24bfaea0f4b52b8ee8aa0152444.
This is in preperation for a UI features merge.