closes#2422
- updated to use new change password method
- have all save settings use notifications
- create assetUrl helper for creating asset paths with subdir's properly
prefixed
- move all url based helpers onto a url object in ghost-paths
Closes#3122
-Fix validation so that all values are validated instead
of just values that evaluate to true.
-Ensure validation methods consistently return promises
and switch error handling from try/catch to promise.catch
to get rid of unhandled rejection warnings.
-Add 0 and 1 to list of acceptable values in boolean validation.
