(WIP) chore(tests): use bower for test lib dependencies

[chrisirhc]

Do not merge!

Update: I played around with switching version numbers and it looks like the version resolution on Bower is... incomplete. After switching the version number, one still has to go through some prompts in order to get the correct AngularJS version installed. I've opened an issue on bower/bower#1037.

Consider the npm install commit but for now I don't think we should use bower.

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Also in this PR, run npm install on grunt configuration. I saw this on AngularJS and I think that's how they keep the packages Jenkins up-to-date. I'm thinking it's not that harmful but we can discuss if that shouldn't be in this PR.

Related to package discussion in #1503.

[bekos]

Hmm, that's a problem. For now, I would suggest to use bower for our own convenience, and also check in the the installed components so that we don't confuse the rest of the contributors.

As a stepping stone, we can have a bower task (not wired to test or build), that just removes all bower components and installs the fresh ones.

[pkozlowski-opensource]

I tend to agree with @bekos, I really like it when builds are super-fast. On the other hand we should make it as easy as possible for people to contribute... On top of this we really need to move to the SauceLab CI as currently the whole process of installing new dependencies on JenkinsCI is a bit painful.

[chrisirhc]

@pkozlowski-opensource , what do you think about running npm install during grunt configuration (the first commit in this PR)? That should solve issues with CI.

[ajoslin]

@chrisirhc the problem with Travis CI is that the Angular guys (who are letting us use their travis server) want only certain dependencies to be installed on their server. Eg they almost definitely don't want any modules with native extensions that have to be compiled.

So there's a whitelist of dependencies that we have to update on the angular repo every time we want to change our build's dependencies. https://github.com/angular/ci.angularjs.org/blob/master/bin/angular-bootstrap-depcheck.js

This is why we want to move to travis and saucelabs, so we won't rely on them any longer. We are grateful that they have let us use it, but isn't best for us or the Angular team anymore.

[chrisirhc]

Sounds good. I wrote that before realizing that was a whitelist of packages on the CI.

[chrisirhc]

Closing in favor of #3461 .