* OEmbed support for PreviewCard

* Improve ProviderDiscovery code failure treatment

* Do not crawl links if there is a content warning, since those
don't display a link card anyway

* Reset db schema

* Fresh migrate

* Fix rubocop style issues
Fix #1681 - return existing access token when applicable instead of creating new

* Fix test

* Extract http client to helper

* Improve oembed controller

There are multiple messages missing in en.jsx.
It is very troublesome when translating other languages.

from #1754, should close out #1394

* Fix syntax error

* Remove two_factor_auth.warning (appears obsolete)

* Add missing strings in ru.yml

A lot of new strings translated, especially for the newly added admin section

* Update Russian translation

* Fix merge conflicts

Redid Works by @rkarabut

Also cache node_module and yarn cache in Travis test process.
Improves speed for Travis tests.

* Add coverage for domain block service with silence

* Get rid of warning about find_each and order

* Move domain_block to attr_reader

* Move optional clear_media into silence_accounts method

* Use blocked_domain method to reduce passed vars

* Extract blocked_domain_accounts method to find accounts on the domain

* Extract media_from_blocked_domain method to find relevant attachments

* Separate destruction of account images and account attachments

Now perfectly similar to the English one.

follow up #1309 & #2279

* Set a dev specific favicon

* Consistent spacing

* Add trailing slash for consistency

* Update to remove interpolation

* Don't toot request with only blank characters

* Enable toot button if no text

Adding more missing strings.

* Update Japanese translation for activitypub and authorized followers

* Fixed Japanese translation by review

* Fixes #1985

- add migration AddMediaAttachmentMeta, which add meta field to media_attachments
- before saving attachment, set file meta if needed
- add meta in api

* add spec

* align the “size” format for image and video

* fix code climate

* fixes media_attachment_spec.rb

ref #2162 and fix #2460

Closes tootsuite/mastodon#1349

This is my first PR and I’m only checking in the source JSX file.
Please let me know if it should be checked in after being built also.

* Stricter whitelist rules

* Linting

* Added spec for blacklisting

* Test subdomain blacklist on domain whitelist

* No need to split

* Change spec name

Based on the device.en file

* proofread & update zh-CN setting form locale

* Pull in new devise zh-CN translations from their wiki

https://github.com/plataformatec/devise/wiki/I18n,
more precisely https://gist.github.com/Artoria2e5/6d2a06ca9e92a417afc627b5000f4690

* pull in zh-CN translation for doorkeeper

... from https://github.com/doorkeeper-gem/doorkeeper-i18n/pull/31/

* Convert to "container-based" travis build

Since all ppa sources used are currently whitelisted by Travis, why don't we convert to a "sudo-less" structure that promises a shorter build start time?

* Explicitly disable sudo in Travis

* Adds logging for daily tasks.

* Fixes Code Climate issues in #2438.

Set status action bar to have display flex and center align items so dropdown icon appears center aligned with other icons. Make styles alpha organized.

Add hover state to boost icon - lighten color on hover.