Merge pull request wallabag#443 from wallabag/release-2613

Prepare 2.6.13 release

Merge pull request wallabag#437 from wallabag/prepare-2.6.12-release

Prepare 2.6.12 release

Merge pull request wallabag#436 from wallabag/prepare-2.6.11-release

Prepare 2.6.11 release

Merge pull request wallabag#424 from wallabag/release/2.6.10

Prepare 2.6.10 release

Merge pull request wallabag#411 from wallabag/release/2.6.9

Prepare 2.6.9

Merge pull request wallabag#393 from wallabag/release/2.6.8

Prepare 2.6.8

Merge pull request wallabag#384 from wallabag/release/2.6.7

Prepare 2.6.7

Merge pull request wallabag#375 from wallabag/release/2.6.6

Prepare 2.6.6

Merge pull request wallabag#372 from wallabag/release/2.6.5

2.6.5

Merge pull request wallabag#365 from wallabag/nicosomb-patch-1

Update Dockerfile for 2.6.4