Moved language variables for edit module CSS from modules language files to core language files
search: added search_time_limit in settings (mainly for sites with PHP < 4.3.3 and slow search)
added missing text in language-files
added new languages to install script; fixed some issues and typos in languagefiles
fixed bugs in converted language-files (BG, CS, PL, RU)
Converted and added some old language-files (BG, CS, PL, RU)