In session sync

-Timeago script was added for file browser
-Now the file syncs up if it was modified, and syncs down if a newer
version exists. This happens during the session is a (somewhat) seamless
manner.
-Saving function is improved
-Syncing icons are better
-Adding images now utilizes Filepicker, so you can upload from a variety
of sources easily
-App cache updated with new file structure