Tab names display option, logout button

- option to change file tab name display from editor settings (full name + path or name only).
* additional language strings: 'File Tabs Title', 'Full Name And Path', 'File Name Only'.
* changing this setting will reload Codaid to apply changes.

- added 'Logout' button to editor-bottom-bar.

Works fine for me, please check if everything done right...
note: /**dF**/ comment added to code to show where I edited it