Merge pull request #598 from luebbert42/devel

Replaced meadow example by hello + param example..
Foxx: Remove some confusing lines from the manual #560
Foxx: Clarification of Authentication #597
Foxx Manual: Overview
Tiny adjustment to the Foxx Manager manual #560
issue #600
Merge branch 'devel' of https://github.com/triAGENS/ArangoDB into devel
updated docs for /_api/jobs
updated docs
updated docs
updated documentation
updated docs
use per-database directories for Foxx apps
fixed race conditions on index file creation
only trigger development mode reload for URLs starting with /dev/
added config for arangob
added MACOSX info about uninstall
added aardvark app on upgrade
updated documentation
added db._id()