added another path for the convert command because on older Macs
ImageMagick has a different installation location
added Image Events as another option to generate images with a mac if no
Ghostscript is available or does not work...
ViewFile servlet: update index if newer,
so viewed text and metadata (stored) info is similar
- to archive it, use request with profile to allow indexing (defaultglobaltext) and update index 
   (the resource is loaded, parsed anyway, so it's not a expensive operation)

Request: remove 2 unused init parameter 
- number of anchors of the parent
- forkfactor sum of anchors of all ancestors
Merge origin/master
remove the unused Request variable
(fix of  prev. commit)