Doc generation should be tested in Travis
Created by: cpascual
In order to detect issues shuch as #392 (closed), it would be nice that travis would build the docs in an environment similar to that of RTD. Note that, in this case, it means that the environment should not have a running TangoTest or Pool or MacroServer. Perhaps it could be accomplished by using a virtual env and temporally changing the TANGO_HOST to something non-existent.