Cookbook Cleanup

Cleaning up cookbook and killing some redundant articles

| Q   | A
| --- | ---
| Doc fix? | yes
| New docs? | yes
| Applies to | 1.1+ of the doc
| Fixed tickets | #283 #257

I am not really adressing #49 - should we move the installation guides elsewhere? i think its not to bad now, with a cookbook section on installations.

what is now even more obviously missing is the editing book section #239.