* Support private uploads in S3
* Use localStore for local avatars
* Add job to update private upload ACL on S3
* Test multisite paths
* update ACL for private uploads in migrate_to_s3 task
* Expose a new plugin outlet. Pass group model to the group-member-dropdown so it can be accessed by plugins
* Added controller tests for group custom fields. update custom fields when updating a group
WS-2019-0064: Versions of handlebars prior to 4.0.14 are vulnerable to Prototype Pollution. Templates may alter an Objects prototype, thus allowing an attacker to execute arbitrary code on the server.
We now show if a queued or flagged post is a reply to another when in
the review queue. It's especially helpful for queued posts where
normally they are linked to the topic where they are created, and you
have no context about the reply.
Note that this will only apply to new queued posts going forward.
Previously queued posts will not show the "in reply to"
During profiling looking up topic users popped up as a hot path, this
change more than halved the amount of work it does
It reduces object allocations and method calls and avoids repeate translation
of common terms
This adds support for DISCOURSE_ENABLE_PERFORMANCE_HTTP_HEADERS
when set to `true` this will turn on performance related headers
```text
X-Redis-Calls: 10 # number of redis calls
X-Redis-Time: 1.02 # redis time in seconds
X-Sql-Commands: 102 # number of SQL commands
X-Sql-Time: 1.02 # duration in SQL in seconds
X-Queue-Time: 1.01 # time the request sat in queue (depends on NGINX)
```
To get queue time NGINX must provide: HTTP_X_REQUEST_START
We do not recommend you enable this without thinking, it exposes information
about what your page is doing, usually you would only enable this if you
intend to strip off the headers further down the stream in a proxy
