Detect the EU 4GB WiFi PW2
Add a warning about the waveform mode constants...

Note that they're from the Kindle driver, the Kobo one might expect
slightly different values...
Move the waveform mode selection a bit...

Move it from the main UI loop to init, we're using static values anyways,
and a change of device at runtime is highly unlikely (:D).
Add the Noto font family to our ressources.

It's basically Droid, but maintained.
Will tweak the defaults later.
Use Noto instead of Droid, where appropriate.
Add an installer/updater to the KUAL ext.

And also play with some CRe settings, for kicks.
Meh...

It's not even funny when everything works straightaway...
Add kerning tweaking to the KUAl ext
Make the CRe KUAL buttons conditional
Ha, of course, I forgot the dubest thing ;).

Cleanup behind us after an update/install ^^.
Update koreader-base

Works in tandem w/ this PR
Merge pull request #708 from NiLuJe/master

A bunch of tweaks