more language bugs in first steps. JDM
more bugs in documentation language resolved.
Fix typos and simplify & clarify some phrases in the documentation.
gcc
unify function behavior in shell and server
Fixed some further language bugs in the doc.
added derived file
Merge branch 'devel' of https://github.com/triAGENS/ArangoDB into devel
Moved subsection troubleshooting from collections to arangodb shell
Added missing methods to fs module. fix #978
changed width of summary block
Merge branch 'devel' of https://github.com/triAGENS/ArangoDB into aql2

Conflicts:
	Documentation/Books/Users/Aql/README.mdpp
	Documentation/Books/Users/AqlExtending/README.mdpp