initial client-side editor rewrite
updated internal editor design
added item search
fixed typo in required editor files
added editor tab bar
fixed window search layout to display saved results
fixed a bug where modified data was kept after tab closing
added save hotkey for editor window
added new item functionality
fixed a bug where saving an new item would not update the layout header fields
MERGE: included changes from dev branch
Merge pull request #3 from MoritzWillig/editor

Editor plugin rework