Grunt-ssh optional, uncomment Google Analytics script.

Hi there,

Small PR to fix some mistakes :) This includes the new `dist/` folder.
I've changed the Gruntfile.js the way it was done by brb-at in [pull request #183](https://github.com/tsquillario/Jamstash/pull/183)
If you don't have grunt-ssh downloaded, grunt will warn that it cannot load the scripts but it won't throw an error and it will continue building.
I don't yet have a solution to use different paths as well as different keys, etc... :/
I've uncommented the Google Analytics script. I always thought it would send pageviews no matter what, but it only does so in the jamstash.com domain. Actally it doesn't even send pageviews when visiting beta.jamstash.com, so it is totally safe for dev and won't mess up your stats. We can keep it uncommented.

Next I'll give issue #184 a try. I've also been trying to add unit test coverage to `grunt test` with [karma-coverage](https://github.com/karma-runner/karma-coverage). Unit test coverage lets us see which parts of the code are actually tested and which aren't, so you know where to add more tests.