Added DomainModuleExists for call Exts only...

+ Added DomainModuleExists for call Exts only (or not) when isn't an
domain module...
GetNumberFromJID added to Utils class

If JID is 'number@host', it returns 'number' only...
Search module added [TESTING]

Add your Google API's key to config/GoogleSearch.json
If you want large results, set "large" to true