Merge pull request #469 from kingcody/fix/order-of-operations

fix(app-config): Use parentheses to fix string concat in config
Merge branch 'master' into canary
use more restrictive matching for serve-favicon version
Merge branch 'master' into canary
Import gulpfile of yeoman/generator-gulp-webapp
Start rewrite 'gulp serve'

clean:server
env:all
injector:less
concurrent:server, injector:css, injector:js
bowerInstall, autoprefixer
Wip watch