Create OC_JSON class, for single point of creating json responses.
No real logic change, this just cleans up the code a bit.

The text will stay in it's place, but 0% usage will lead to an empty
bar.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

Signed-off-by: Florian Pritz <bluewind@xinu.at>

- change value to "Please wait...."
- disable all the inputs & buttons
- submit new form, because disabled inputs are not submitted to the server

Removed global vars are DOCUMENTROOT, SERVERROOT, SUBURI, WEBROOT and CONFIG_DATADIRECTORY

Initial work on resetting forgotten passwords. It works, but still need to email a token to allow reset

The search box style is a design decision, search boxes are always styled differently from other inputs.
This reverts commit 9d48ca75.

That way Apps that have a long name (like OpenStreetGame for instance)
show their name troncated instead of continuing over the application frame.

(which breaks svg images for most browsers)