Load only explicitly declared languages
if an extractor.xx existed but xx was not declared in languages, xx was added in the extraction list
change TODO comment (by @ninniuz)
Merge pull request #217 from jimkont/dump_config

Load only explicitly declared languages
update enabled extensions
no londer needed comments
no londer needed comments
add commons and be in mappings namespace
new blank mappingstats and ignorelist files (commons, be and previously missing ones)
update namespace settings