Add logging of errors if API initialization fails

It'll give us some more insight as to why the credentials are missing on
notification
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into develop
Longer timeout for async tests

It feels our build server isn't fast enough so increase timeout to avoid
failing tests
More logging for WordPressComApi
#278 - Remove old wordpress.log file at launch if it exists
#212 - Replace instances of HelpViewController with the new SupportViewController.
Additional testing is needed to ensure proper display of navbar controls for navigation in the different scenarios (iPad vs iPhone mostly)
#212 - Put Support VC in a nag controller when asking for help in add site view
#212 - Removed unnecessary import
#22 - updates wpcom usernames/passwords to use WPAccount (was WordPressComApi)
Merge branch 'feature/account-cleanup' into develop