Update Captcha9kw.py

- queue option (servercheck) for the 9kw plugin
- "https" setting will be checked in every function so restarting PyLoad is no longer necessary because "setup" seems to be launched only once when starting PyLoad.
- hosteroptions with options for every hoster (timeout,prio,confirm,selfsolve,case-sensitive,min_len,max_len,cph,numeric,phrase,math)
- improved data for the history on 9kw (9kw history / 9kw history api => filter source/oldsource)
- localization option for logentries removed, not needed. English is enough for the (debug-)log and better for the 9kw support. 
- little text things (max. prio 20, max timeout 60-3999s)
- slightly improved debuglog (1 line)