Recognize versions from tags, not only bower.json

For example for moment#0.3.2. That version exists in tags, but has no bower.json. If yoy as `bower info momentjs` we clearly see that this version exists, so we schedule build, but during actual build, no version is defined in bower.json, so it fails.

One solution is to fetch all component information from bower, and leave bower.json/package.json for it to parse.

- [x] Use bower info for fetching repository description, main files and dependencies
- [x] Use bower install instead of bower info to get component information + extract information about dependencies
- [x] Integrate Converter class with the rest of application of test manually if everithing works
- [x] Only one bower install per request