Fix documentation (#103)
Fix documentation (#103)

* refs #98, switched to specific config files.

* refs #98, link to de.NBI Wiki

* refs #98, link to de.NBI BiBiGrid Wiki

* refs #102, corrected BiBiGrid description and azure example

* fix(doku): #98 : #92, #93:
removed some mesos and cassandra support,
changed command line arguments doku
changed project-tenant

* fix(doku): #102
changed command line arguments doku
CONFIG_AWS converted to .md file

* fix(doku): #102
added cluster-id to terminate cl argument

BiBiServ/bibigrid,BiBiServ/bibigrid,BiBiServ/bibigrid,BiBiServ/bibigrid