Optmized code for reading level's name. Instead of loading the all levels, just parse...

Optmized code for reading level's name. Instead of loading the all levels, just parses now the title.
Both worldmap loading and contrib menu generating were optmized.
I couldn't time the worldmap loading speedup, since it was already instantaneously in my machine. But the contrib menu takes less than 1 sec versus the 4 seconds (and a few ms) of the old code.

SVN-Revision: 1585