Fixes #166. Add raw=True when parsing passwords.

When parsing .pyrax, we should set the raw=True argument on
ConfigParser.SafeConfigParser.get on key or password fields, allowing percent
signs to be used there. Without this, users get
InterpolationSyntaxError. Switching from SafeConfigParser to
RawConfigParser would do the same thing, but it's backwards incompatible
because we could have people relying on interpolation elsewhere in their
config files.
Merge pull request #167 from briancurtin/working

Fixes #166. Add raw=True when parsing passwords.
Fixed issue #161: different locales caused date parsing error.
Merge branch 'working' of github.com:rackspace/pyrax into working
Changed the locale code because Travis CI didn't like some settings. No logic changes
Gave up trying to make locale changes work with Travis CI.
Updated the version number and release notes.
Updated the class docs
Version 1.4.11 - bug fixes. See RELEASENOTES.md for a list of changes.
Merge branch 'master' into working
Merge branch 'working' into dev