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Merge 'master' into 'central-server' branch

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Merge branch 'master' into central-server

Merge branch 'master' into central-server

Merge branch 'master' into central-server

fix merge

Update submodules

hackage-deployment-2018-02-12

Notable changes since last deployment:

- Fix mixed-content issue on package pages
- Improve source-repo rendering for unknown repo-types
- Add support for extended validation via `cabal-parsers`
- Prevent line-wrapping of headings in package properties table
- Add tooltips to DL/ratings columns in table-browser UI
- Fix issue with tags being reset
- Fix issue with last-update field not updated correctly on package uploads

Merge branch 'master' into central-server