feat(auth) add confirm password to signup and settings

also adding for attribute to labels with and ids to associated elements
confirm password powered by directive: https://github.com/wongatech/angular-confirm-field
Files Modified:

    app/index.js
    app/templates/_bower.json
    app/templates/client/app/account(auth)/settings/settings(html).html
    app/templates/client/app/account(auth)/settings/settings(jade).jade
    app/templates/client/app/account(auth)/signup/signup(html).html
    app/templates/client/app/account(auth)/signup/signup(jade).jade
    app/templates/karma.conf.js
    test/fixtures/bower.json

take note of new dependency in test/fixtures/bower.json (re-run bower install on current clones...)