etag has to be removed after version rollback to enable the sync client to detect the changes (bug #1829)

The mtime in the file cache has to be updated after version rollback (copy from outside of the regular files root) (fixes bug #1720)

gettext with language setting 'Python' gives better results than 'Perl' 

Depreciated const can be removed after sync client update and release

- change update routine to add the namesapce to all stored properties

Stop autocomplete selection event propogration so share dropdown doesn't disappear, fixes bug oc-1773

Include shared files in result

Thanks to mETz