Merge branch 'features/thumbnail-generation-feature' into 'master'

refactored thumbnail service to be independent and added ThumbnailController...

See merge request encircle360-oss/docsrabbit/docsrabbit!17

Bugfix release with fixed template loading

New Release v0.0.4

Merge branch 'fix/missing-locale' into 'master'

added missing locale to render request

See merge request encircle360-oss/docsrabbit/docsrabbit!4

Merge branch 'features/documents' into 'master'

first working docsrabbit version

See merge request encircle360-oss/docsrabbit/docsrabbit!1

First rev docsrabbit