Fix go meta tag

See https://github.com/gitlabhq/gitlabhq/pull/5958#issuecomment-45397555

Patch `rake cache:clear` for large amounts of keys

More swap is also an option

Redirect after login

Use html5 tags for better semantic

MR diff loading spinner

When you click `Changes` tab if diff is big - you now see loading spinner

Ui improvements

Skip to buttons on tabbing in issues page

This will skip tabbing right to "Add comment" or "close" buttons.

http://www.w3.org/TR/html5/editing.html#sequential-focus-navigation-and-the-tabindex-attribute

For tabindex:

```
If the value is a negative integer
The user agent must set the element's tabindex focus flag, but should not allow the element to be reached using sequential focus navigation.
```

Remove observers from application

Part of #1133

Regression issue on rc

Fixes #7163, copy init script while upgrading (master branch)

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Fix permissions

Fixes #1358

Mention all update guides in monthly release doc

Fixes #1328

If user was a member of both group and project and group access level
was higher it was not respected and user got lowest project access
level. Now it is fixed and user get highest access level
Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Create 6.0-to-7.0 update guide

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Fix 500 error when transfer project from admin area

Fixes #1349

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Revert email threading rewrite

The 'to:' address introduced by this merge caused a flood of email going to an admin account for GitLab.com. This feature should not be shipped as-is.

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>