Fix imagerotate and move loadFromBase64() one up.

imagerotate() with third parameter being -1 does not seem to work in PHP 5.5

loadFromBase64() one up, so debug-logs aren't spammed (as much) with urlencoded
base64-data from loadFromFile() debug output.
Add displayname for admins
Return 101 if user doesnt exist
adding share owner information to the file list
store the share owner in a data-attribute instead of a separate span
update share owner
remove duplicate selectors and declaration
show share owner within shared folders as well
uppercase text and fix dialog popup
Improve jQuery element selector

see https://github.com/owncloud/core/pull/7012/files#r9337198
http://24ways.org/2011/your-jquery-now-with-less-suck/
Use 'command -v' to detect whether and where software is installed (instead of 'which')
Allow admins to disable certain external storages for users

Fix issue #6793
Config to disable basic_auth username chacking

This can be confusing and/or annoying
remove unused code and fix wrong variable names - some PHPDoc updated
Cache the fileinfo in OC\Preview
add BMP mimetype for BMP previews
CSS is now loaded directly instead via PHP

269f24cf9617397aaf501b27ec1af2c8e3154cf8 was not changed in setup.php which prevented loading of CSS files in some environments (e.g. my local setup) for apps.
Merge pull request #7471 from owncloud/fix-css-loading

CSS is now loaded directly instead via PHP
Merge pull request #7444 from owncloud/fix/7443

remove unused code and fix wrong variable names - some PHPDoc updated
Merge branch 'master' into display-share-owner-master

Conflicts:
	apps/files_sharing/lib/cache.php