The run key toggles now between running and walking.
Run per default, as that is what you usually want.
Chranged the run key default from "Shift" to "R".
Moved wireframe mode from hotkey R to F9.

Reasoning R is a too well placed key to be used for that.
Made left shift toggle between running and walking while you hold it.

If the current default set with R is running, then holding left shift
will make you walk. If the current default set with R is walking
then holding left shift will make you run.
Made CAPS toggle running per default instead of R.
Update hotkeys and add a reflection cache clean task in Gradle