Updated MetaUI to show saved/synced status.
Added border to buttons on hover
Changed to dim save & sync buttons at appropraite times.
Fixed so buttons do not work when disabled.
Fixed logging functions.
Laid ground work for sidebar (and file browser).
Including animation.
Fixed FileBrowser.list()
Move utiltt functions to util.js
Implemented initial file browser
Fixed EditorScreen.checkSave() and its uses.
Fixed EditorScreen.blank()
Changed EditorScreen to EditorUI