Add some .gitignore

Signed-off-by: Neo2003 <Neo.2003@Hotmail.fr>
[Core] Extraction scripts rewritten. Movemaps extraction should be about 30% faster now.

Please note: remove or rename the file mmap_excluded.txt to extract the 'junk' maps.
             i.e. Emerald dream etc.
Merge branch 'Rel19' of https://github.com/mangoszero/server into Rel19