6.x

Issue #1524488 by sebas5384: Don't override custom redirect paths when saving a node.
Issue #1604700 by floater: Fixed a missing argument for variable_get().
Issue #2276289 by esclapes: Fixed js not working with vertical tabs.

• Don't empty the group membership lists of sub-groups when the "Copy these permissions to all sub-groups of this group" option is checked
• Correctly delete the group from mm_node_write when using "Reassign user content" and the user being reassigned is the only member of an "individual users" permisions group for a node

Allow spaces, commas and semicolons as separator in allowed referer field
#2291213: Properly include headers into DRD http requests to make sure that mod_security or other tools won't reject our requests
#2291213: Improve debugging and implement a debug export
#2291213: Avoid notice if keys for an IP don't yet exist
#2274065: Further improve the detection of the installation status for remote domains to properly work with https-only domains

Aaaaaand here we go.

Backport of Stickynav module