removed os_gettime_ms, added os_file_exists
Merge branch 'master' of https://github.com/jp9000/obs-studio
added some more config file functions for going through each section
updated settings form again with new callbacks
rename locale file to use sub-language tags only when actually necessary
fixed a lexer bug with detecting alphanumeric character text (not happy about it though)
add settings data for general page, query available languages