oAuth 1.0a - Spec 9.1.2 : Add port

Follow spec 9.1.2 for oAuth 1.0a
Add port in sign request url except if default ports

Indentation & remove useless braces ternary
Merge pull request #576 from stloyd/bugfix/oauth1

oAuth 1.0a - Spec 9.1.2 : Add port, Follow spec 9.1.2 for oAuth 1.0a