Make the IRC Travis CI bot a bit less noisy.
Sphinxify the docstring for bridgedb.EmailServer.getGPGContext().
Refactor bridgedb.EmailServer.getGPGContext() to improve exception/error handling.
Don't include the old unittests in the calculation of coverage results.
Move method wrapper utility @fileCheckDecorator() to bridgedb.test.util.

 * ADD bridgedb.test.util, with method decorator @fileCheckDecorator, and give
   that decorator a docstring with a doctest example.
Add unittests for bridgedb.EmailServer.getGPGContext() function.
Improve error handling for the HTTPServer if a port is already occupied.
Ignore _trial_temp/ directory.