Debug log messages for umlaut problem in nicknames when editing member profile.
Test successful - found the bug! Therefore:

Revert "Debug log messages for umlaut problem in nicknames when editing member profile."

This reverts commit 8026c0fe213a65a83502bf664f84cdef19cec0c5.
Bugfix for #562: member edit urls are now lowercased in order to determine whether somebody may edit some profile. (This is ok because nicknames must be unique without regard to the case.)
Merge pull request #563 from NicoleRauch/master

Bugfix for #562: member edit urls are now lowercased in order to determi...
Merge commit '2ef079a8078ba5db689e48fd33a537c1ab980e21'