* If the error doesn't have a message, the class name will help
* example:
before: "Failed to download #{filename} because "
after: "Failed to download #{filename} because Aws::S3::Errors::NotFound"
This reverts commit 20780a1eee.
* SECURITY: re-adds accidentally reverted commit:
03d26cd6: ensure embed_url contains valid http(s) uri
* when the merge commit e62a85cf was reverted, git chose the 2660c2e2 parent to land on
instead of the 03d26cd6 parent (which contains security fixes)
For example given a custom badge with SQL:
```
SELECT 1
-- I am a comment
```
You end up with
```
FROM (SELECT 1
-- I am a comment) q
```
This fix adds newlines so you end up with the now-valid:
```
FROM (
SELECT 1
-- I am a comment
) q
```
* when importing a private theme using the themes:install rake task the SSH key is written out to a file for use by the git-clone command
* if the private key is written out without a newline at end-of-file (i.e. after it's been stripped) it's not recognized as a valid key by SSH
* so: don't strip it when writing it out, we should be fine
* Change recommendation for install path to /var/www/discourse
* Fix instructions for redis-server installation
* Set yourself as system user during install
* Clarify some instructions
* add screenshots from Ubuntu config process
* add instructions for updating predeployed VMs
* add details on configuring mail server
* don't install test gems into prod
* no need for bundle exec
* small cleanups
* added RVM option for single-user install
* clarified Web Server options
* bluepill sample config: create socket directory if it doesn't exist
* add multisite.yml.production-sample
* rename production.sample.rb (OCD)
* make two database.yml samples (one for dev, one for prod)
* fixed travis build (database.yml.sample renamed)
* fix other references to database.yml.sample
* clean up 'rvm requirements' instructions as per @mpapis
Michael Brown