Use the SSL version of the embed progress gif.

We are always getting requests to change this to ssl so making it SSL by default is just sensible at this point.
Merge pull request #2240 from vanilla/hotfix/ssl-embed-progress

Use the SSL version of the embed progress gif.
Registration: Add event to registration page.
Merge branch 'master' of github.com:vanilla/vanilla
Fix performance error in OAuth class check.

I’ll buy a pint for the dev that describes this bug this fixes in the best detail.
Merge pull request #2241 from vanilla/hotfix/oauth-autoloader-performance

Fix performance error in OAuth class check.
Allow redirect() to be called before database has been initialized.
Merge pull request #2243 from vanilla/hotfix/redirect

Allow redirect() to be called before database has been initialized.
Prevent the autoloader from looking into some common non-php directories.

We’ve been working a lot more with gulp and sass lately and these libraries can create many, many nested folders causing the autoloader to take very long to find classes, even timing out the request in the process.
Update the discussions mine view

Use the default discussions view to render mine view and allow for table layout.
Note that mine.php was not being rendered by controller at all.
Merge pull request #2248 from vanilla/hotfix/MineViewLayout

Update the discussions mine view
Merge pull request #2247 from vanilla/hotfix/autoloader-recursive-opt

Prevent the autoloader from looking into some common non-php directories.
Merge branch 'master' of github.com:vanilla/vanilla into stage