[translate] Various improvements for translate and mangle

 - Eliminate HTTP error 414 when using mangle.
 - Remove useless parameters from the google translate URL to allow for longer translation strings
 - Remove the old, less random mangle
 - Add more lanauges to mangle the text even further
 - Make research log of mangle configurable, defaults to False
 - collecting mangle lines now defaults to False as well, to save memory