Merge pull request #1314 from jaysoffian/master

pylint: remove unused import
Fix TeamDetailsEndpoint.delete() to properly defer deletion

The countdown argument is used with Task.apply_async(). When calling
it on Task.delay it's just passed through direectly to delete_team()
where it is never used.
Make TeamManager.get_for_user() ignore non-visible teams

Teams with status != TeamStatus.VISIBLE are pending deletion.
Hide them from normal view.
Convert remove_team() to use async delete_team()

Previously remove_team() called team.delete() directly, which
orphans the team's projects and other related objects. Meanwhile,
TeamDetailsEndpoint.delete() uses the asynchronous delete_team() task,
which nicely handles related object cleanup.
Merge pull request #1315 from jaysoffian/async_ui_team_delete

Async ui team delete
Fix TeamManager.get_for_user()'s hiding of non-visible teams.

Move the filtering of non-visible teams to where the results
dict is constructed, otherwise non-visibile teams may be returned
if either access_groups or SENTRY_PUBLIC are True.
Merge pull request #1316 from jaysoffian/async_ui_team_delete

Fix TeamManager.get_for_user()'s hiding of non-visible teams.
Deprecate sentry_user_emails in favor of sentry:user
Update locales
Fix team dropdown menu
Merge branch 'master' of github.com:getsentry/sentry
Prevent duplicate event requests
Store less data for individual user tags
Ensure extra data is scrubbed
Language
Really really discard duplicate event
Throw a proper error when we discard an event
Note about pre 7.0
Clarify 7.x upgrades and remove old versions
Note about tsdb