change quiet keyword to verbose

[orbeckst]

In many places (namely, the analysis classes and the progress meter) we allow the user to mute output with quiet=True. However, it really seems more customary to use verbose=False (@kain88-de mentioned this in PR #892).

To make things a bit more uniform and conform to user expectations, we should

• deprecate quiet
• make verbose available.

For 1.0, verbose should be the only available flag. Until then, quiet needs to override verbose so that users are guaranteed their old behavior.

Maybe it is possible to write a ten2eleven fixer — @tylerjereddy ??

[tylerjereddy]

I'll try to look into the fixer. I suppose I can justify some procrastination until the code is actually implemented though.