fix(textSearcher): function search has never returned the promise
refactor(gitconnectcontroller): better handling for default parameters
feat(providerselection): The selected provider will now be transmitted in the httpheader

- The services using now the httpHeaderBuilderService to create the
  fields that should be in the httpHeader
feat(providerselection): Placeholdertext in form gitconnect

- The inputfield for the repo url has now a placeholdertext
  This text is different for each provider
Merge branch 'develop' into feature/gitconnect

* develop:
  fix(textSearcher): function search has never returned the promise