calculate free space for versions
add size to versions array
update files history according the given intervals
remove blacklist
personal settings removed, there is no need to expire versions manually
expire all operation no longer needed; delete oldest versions if limit of empty space is reached
don't check for min interval, no longer needed
get timestamp from file instead from time(); typo fixed
add missing bracket
remove DEFAULTMAXFILESIZE limit and make percentage of available space for versions configurable
debug output removed
the maximum upload size is now part of the response of the upload and delete operation.
the maximum upload size is updated within the browser once an upload or delete operation has been finished
LDAP: fix spelling
Switch to textarea to enable configuration of multiple DNs
Base DNs will be used as array, now, to support usage of multiple DNs
support multiple base DNs
support LDAP search using multiple base DNs also with paged results, implements #395
Merge branch 'master' into fixing-784-master

Conflicts:
	apps/files/ajax/upload.php
	apps/files/js/files.js
	lib/helper.php
removing undefined $response
removing unused parameter $parameters
fixing undefined variable $useDir