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
Merge branch 'master' into fixing-784-master

Conflicts:
	apps/files/ajax/upload.php
	apps/files/js/files.js
	lib/helper.php
Merge branch 'master' into fixing-784-master

Conflicts:
	apps/files/js/files.js
adding jquery-visibility
https://github.com/mathiasbynens/jquery-visibility
MIT and GPL licensed
load jquery-visibility
adding a ajax call to get the current file storage stats like free space
logic to call it every 5 minutes
make use of visibility API/jquery-visibility to perform the ajax call only if the browser is visible/in use
fixing indent
Merge pull request #986 from owncloud/fixing-784-master

the maximum upload size is now part of the response of the upload and de...