Merge branch 'devel' of https://github.com/triAGENS/ArangoDB into devel
remove addtogroup blocks
fixed some race conditions in transactions
GraphViewer: Node colouring added to the demo.html. Decided to forcefully set the TextColour to black, as it inherits the user defined colour-scheme otherwise and this gets unreadable quite fast
GraphViewer: Implemented test for edge colouring dialogs
GraphViewer: Implemented UI Dialogs for edge colouring
GraphViewer: EdgeColouring tested in demo.html, again the label is set to black forcefully
GraphViewer: Enlarged the Arrow Pointer, has to be changed to be relative to nodesize
read & write collection ids as strings in parameter.json files
Merge branch 'devel' of github.com:triAGENS/ArangoDB into devel
disallow create/drop/rename operations inside transactions
adjusted wording and log-level
Foxx: Tiny changes to the README
update the tick counter on startup with ticks from journals
Merge branch 'devel' of https://github.com/triAGENS/ArangoDB into devel
push before compactor change
Foxx: Introducing Model
Foxx: Introducing Repositories
Merge branch 'devel' of github.com:triAGENS/ArangoDB into devel
Crazy Documentation Fixes. Doxygen is so awesome.

/thx @jsteemann