refactored api.js execution to be more clearer
refactored workflow.js execution to be more clearer
added some comments + fixed some jslint stuff
Merge pull request #33 from dominikkukacka/feature/executionRefactorStructure

execution refactoring
added module `con-rest-test` to extract common test helpers for reusability
 - directive creation is now more easy to set up
added request creators and request assertion
refactored restCallWidget to use the test helper
refactored restCallOverviewWidgetSpecs to use the test helper
created workflow matcher
refactored workflow registration widget specs
created controller helpers
refactored workflow overview tests to use the test helpers
workflow vm specs refactored to use the test helper
restCallOverviewVM refactored to use test helpers
refactored callregistrator widget to use test helpers
refactored workflow widget to use the test helpers