Added test for getWiki funciton
- Thomas
getWiki test and method created and is finished

	successful getWiki test
	method implemented

	Commit by: Simon
findWiki methods is tested and complete

	created findWiki
	created the supporting methods
	implemented the findWikiMethod

	Commit by: Simon
getCategories method is finished

	 the method have been tested
	 and the functionality implemented

	 Commit by: Simon
Updated test in test-datalayer
by: Thomas
Cleaned up in tests
by: Thomas
getWikiByCategories test and logic finished

	created the last test and implemented
	the method.
	All tests are now green and passed

	Commit by: Simon
- Got ObjectID working in test
- Remeber to run 'npm install mongodb'
by: Thomas
Merged branch thomas-test-one into simon-test-one

	all tests are green
	changed the path to the mongolab tests database
	in the config file

Conflicts:
	server/source/datalayer.js
	test/server-test/test-datalayer.js
	test/server-test/wikiMock.js

	Commit by: Thomas, Simon