Fix issues introduced by some merges.

Activate HTML5 mode exclusively when actually running in the context of the
application by introducing a `prx.base` module which acts as the application
module in the HTML and nowhere else.

Mock out some additional `$state` information as required by
https://github.com/angular-ui/ui-router/commit/71cad3d636508b5a9fe004775ad1f1adc0c80c3e#diff-544b7ce9751e1a566e17d486dd4ab576R87
Switch to object notation for params on states
upgrade coveralls reporter
switch from expecting null to expecting undefined for empty params
allow null values
upgrade various node packages
Merge pull request #110 from PRX/fix/merge_errors

Fix issues introduced by some merges.