Fixed file not found issue

This fixes an issue where the second call would miss the "/files" part.

The path attribute must keep "files" so that the next call to the File
instance will still have the correct one.

Fixes #155
Make it possible to rename documents by clicking on title
Now using inline input field for rename action

Also added validation of file name.
Remove outdated viewer stylesheet. Fixes #156
More compact input
Ignore avatar faults. ref #140
Patch a patch
Inject removeMember on timeout. Ref #150