[12384] Fix recently un-outcommented code to be actually working
[12385] Use Filter log for grid unloading messages
[12386] Note ingame if gossip conditions are ignored because of GM mode
[12387] Implement spell effects 50742, 50810 and 61546
[12388] Update Authorship information
[12389] Fix Typo from 10727. Special thanks to Morenn for spotting

Signed-off-by: Schmoozerd <schmoozerd@cmangos>
[12390] Do not use GLOB in CMake for source file lists

From the CMake documentation of the FILE command:
We do not recommend using GLOB to collect a list of source files from your
source tree. If no CMakeLists.txt file changes when a source is added or
removed then the generated build system cannot know when to ask CMake to
regenerate.