There is no guarantee memcache is available
Need to actually define the memcache variable or else errors are thrown
Revert "Fix link colors and remove address group background."

This partially reverts commit 232f65ed0160c52e8e90d8173851b5e463691435.

This absolutely needs to occur, or else there is no indicatio of which
e-mails are actually part of the group.
Fix javascript error if address limit is reached and limit is not reached within a group
[mms] Handle non-supported htmlspecialchars() charsets in the Text2html filter (Bug #12253).