1.3 update

Status: **Opened for visibility**

Reviewers: **@jansepar**
JIRA: **https://mobify.atlassian.net/browse/PROD-1536**
Linked PRs: **https://github.com/mobify/mobifyjs/pull/262**

## Changes
- Rolls forward Mobify.js 1.3, which now sources Mobify web service client APIs from bower

## How to test-drive this PR
- Checkout this branch
- Grab a Mobify.js 1.1 project, edit it's project.json such that the key `api` has a value of `"1.3"`
- Start this checkout of the Mobify Client in preview mode eg `$ <path to checkout>/bin/mobify.js preview`
- Preview that project, ensure that it seems functional