Files: change wording 'From url' to 'From link'

Backport of de1b95c

Use $.each() instead of for(var...) in oc.dialogs. Fixes accessing undefined vars in IE8.

Send the requesttoken as form value

checking quota in webdav

Tests for p and print_unescaped added

check for database error in userExists

I'm not sure if IE9 is also affected, so I changed it to "older IE versions" - IE 10 should work fine.

This is needed for IE < 8 because it doesn't send the CSRF token here.
So that it is impossible to upload files.

Fixes #110 and related to #122

Generate .htaccess when upgrading from old versions

fix settings' routes

When upgrading from old ownCloud versions like 2.x the .htaccess is not
generated - which exposes the data to the internet. This fix will
generate a .htaccess when upgrading. (And no one exists)
Fixes #127

NoSpaceAfterComma -- checkstyle cleanup

fix moving (in) dirs containing "+"

fix dirnames containing "+" not displayed

fix moving dirs containing "+"

fix dirnames containing "+" not displayed