Added a specific README for RSDV

Also created separated branch for RSDV
Updated index.html

Changed link on site for source browsing on new branch
Some WebStorm thingies when changing PC
Reformatted index.html
Forgot to adapt CSS
Reformatted Google Tag Manager code
Added a start of a more complete help text.
Added the "About this app" text and some other misc. changes
Remade uglified scripts.
Merge pull request #1 from dirtcrusher/RSDV

Merge branche RSDV into master