Merge pull request #43 from ptommassen/feature/iOS8-modal-fix

Fix for the weird modal behaviour on iOS8
Merge pull request #44 from sven-m/feature/handle_allow_selfsigned_ssl_certificates

the MBHTTPConnectionImpl now checks whether the delelgate actually imple...
Merge pull request #45 from sven-m/feature/make_connection_builder_public

connectionbuilder is now public and easily overridable
Merge commit '8d87acb8a3e5f82e53d4d8c81a8908e425086da1' into develop