Force the dictionary popup to do a partial update.

It was done the other way around on purpose, so I probably broke some
very specific use-case ;). Feel free to shout at me ^^.
Do FULL updates when going in/out of ScreenSaver.

Sounds a good idea in general, and helps in particular on REAGL-aware
devices.
Shot in the dark at matching the H2O's behavior...
Make IconButton updates regional

Beginning of the quest to make menu refreshes slightly smoother ;).
make RedaerFooter updates regional
Use the proper constants for Kobo's waveform modes
More comments on the H2O weirdness...
Moar comments!
Actually do what the comment says.

Don't hijack forced partial updates (i.e., from UI elements) on always
FULL REAGL devices. It doesn't implode if we don't, and it makes for a
snappier UI.
Fix the REAGL logic.

Never use REAGL to handle UI elements. It makes for a much smoother
experience.
Tweak some comments
Make ToggleSwitch updates regional
Make Button update regional
Make ConfigDialog updates regional
Make TouchMenu updates regional
Unbreak FM by reverting 7a812f

:D
Be consistent in how we refer to stuff
Me speak english good. ya!
Merge pull request #1123 from NiLuJe/master

Cleanup the REAGL stuff