Update express and body-parser dependencies.

No Issue
- Upgrade to versions of these packages that use qs >= 1.0.0.
Merge pull request #3739 from jaswilli/update-packages

Update express and body-parser dependencies.
Upgrading Casper to official 1.0.0 release
Final Ghost-UI version for 0.5
Fix for bug where owner user has name owner

no issue

- in the case that the role is not being assigned, the code assumes it doesn't get a role..
Merge pull request #3741 from ErisDS/owner-user

Fix for bug where owner user has name owner
Change user actions button tag

No issue

- Changes the user actions button to a `<button>` element.
Ensure that slug is always synced for User form.
Merge pull request #3742 from rwjblue/ensure-slug-is-always-saved
Filestorage helper returns string true if config is object

no issue

- else admin client gets [object Object] which is weird Please enter the commit message for your changes. Lines starting
Merge pull request #3744 from PaulAdamDavis/user-actions-button

Change user actions button tag
Add ghost logo anchor tag

Amends #3736, references #3623

With `button.ghost-logo`, there's no `href`, so cannot be opened in a new window. This changes it back to an anchor and appends the blog URL to a href attribute. Win!

Bumps Ghost-UI version to 0.8.13 bring in related CSS changes.
Merge pull request #3743 from ErisDS/filestorage-helper

Filestorage helper returns string true if config is object
Merge pull request #3740 from PaulAdamDavis/ghost-logo-link

Change Ghost logo link back to an anchor
Version bump to 0.5.0