[s1882] Add some creature_template level checks to avoid client crashes with invalid values

(based on commit [12367] - eadfd08c374fa77ac6a6c4ecbc113755cfb83a7f)

(based on commit [12351] - 3de95a5)

Signed-off-by: DasBlub <DasBlub@gmail.com>
[s1883] use the absolut path for CMAKE_INSTALL_PREFIX

Before this commit, building with a relative ${PREFIX} would cause the
build to fail.

(based on commit [12352] - b6bdff7)

Signed-off-by: DasBlub <DasBlub@gmail.com>
[s1884] New CMaNGOS icon

More info http://cmangos.net/thread-23.html

(based on commit [12353] - 84ba04e)

Signed-off-by: DasBlub <DasBlub@gmail.com>
Announcement: New forum at http://cmangos.net

The CMaNGOS Team is happy to announce a new forum located at http://cmangos.net
You are welcome to drop by there and join us in our goal to do the best development we can!