Partial pick: Cleanup: removed deprecated dependency checks

Pick note: Only picked the part for removing live translation.

Conflicts:
	pootle/depcheck.py
Cleanup: live translation already passed away
Followup: Record live translation removal on release notes
Cleanup: removed dead code

Conflicts:
	pootle/apps/pootle_language/views.py
	pootle/apps/pootle_project/views.py
Hide the entire breadcrumbs block by default; show it on page load

This prevents separators between select2 controls from being shown first

Conflicts:
	pootle/static/css/style.css
Use `js-` prefix for js-related selector
Fix Google Translate button initialization

Notes: at MT init time, the targetLanguage member seem to be missing; the target language is now taken on editor "ready" event, when it is gathered from <textarea lang="..."> attribute (there should be a cleaner way to store and retrieve the source and target languages than it is now). Also: was there a reason to store the 'targetLang' as a propery of the plugin? I removed that code. Especially now that the target language can be different across units.
Partial pick: Visually emphasize the rendering of non-zero 'need translation' and 'suggestions' values

Pick note: It is not necessary to pick the rest of the changes since they
were already brought in.

Conflicts:
	pootle/templates/core/_table_row.html
Set explicit dimensions of the gravatar image to avoid jumpiness on rendering; use better vertical alignment
Do not return checks structure if the checks count is zero
Fix bug in stats preparation
Moved code creating Suggestion (defined in pootle_app.models) from view to model

Conflicts:
	pootle/apps/pootle_store/models.py
	pootle/apps/pootle_store/views.py
More cleanups