Made signatures unfolded / code cleanup - 52th eMBee idea

[tradzik]

As there https://factor.cc/pad/p/sup-ideas - issue 52

@eMBee ping

[eMBee]

seems to work. i am not yet sure if this should actually be merged, it may want to be configurable, or some more advanced feature where signatures are only shown if they are new, or something like that, but nevertheless, the idea has been implemented as described.

[tradzik]

"signatures should not be folded (if they are hidden what's the point of having them"

[eMBee]

task closed: http://www.google-melange.com/gci/task/view/google/gci2014/5774529926266880