Moves bootstrap css files to specific folder to manage custom css under version control.
Hides remove button when editing.
Specifies columns widths explicitly.
Adds rows ids for simple UI management.
Focuses edit input when editing item or creating folder.
Updates fixtures.
Makes the angular app more promising + uses only items array for all files/folders items.
Repeats items only and use 'same' templating for folders/files items.
Fixes add folder method according new items registry.