fixed WITHIN_RECTANGLE for cluster

Conflicts:
	js/apps/system/aardvark/frontend/js/modules/org/arangodb/simple-query-common.js
	js/common/modules/org/arangodb/simple-query-common.js
fixed tests
added derived file
added several AQL functions
added test case
allow lazier querying of hash index
updated CHANGELOG
renamed function, updated documentation

Conflicts:
	CHANGELOG
issue #1109: added *bytes* unit to API description where missing
Added some documentation files to gitignore
Minor documentation fixes.
First version of fix for LIMIT cost estimation.
Fix compilation of new estimation function.
updated changelog
include collection name in replication output
fixed tests
removed unused function
updated CHANGELOG

Conflicts:
	CHANGELOG
removed unused function
Expose root-relative mount URL as appContext.baseUrl.