Support for more engines

[raspher]

It would be nice to see new search engines in programm:

• AOL Search - https://search.aol.com/
• webcrawler - https://www.webcrawler.com/
• mywebsearch (has some Google results, Google bans so fast, maybe it's workaround?) -https://hp.mywebsearch.com/
• infospace - http://infospace.com/
• info - http://info.com/
• duckduckgo (must have) - https://duckduckgo.com/
• yacy (decentralized search engine, every peer can be used as engine) - http://search.yacy.net/ (not working)
• http://search.botw.org/