~mser/emote-server

Merge branch 'release/1.4.0'
Don't overwrite existing files
Improve HTTP API responses
Merge branch 'hotfix/1.3.1'
Merge branch 'release/1.3.0' into develop
Merge branch 'release/1.3.0'
Add missing environment variable documentation
Add optional file size limit to the HTTP API
Fix repository URL in installation instructions
Merge branch 'release/1.2.0'
Merge branch 'release/1.2.0' into develop
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