- Add static analysis with LGTM and fix many warnings and errors discovered
- Desktop: update snap and appdata meta data
- Desktop: make sure cloud storage email addresses are lower case only
- Desktop: Fix editing of dive-time [#1975]
- Export option for profile picture
- Desktop: Add export option for profile picture [#1962]
- Export: fix picture thumbnails [#1963]
- Desktop: remove support for the "Share on Facebook" feature.
  Rationale: It is fairly easy to share images on Facebook, thus it was decided
  that this feature is redundant and should be removed from Subsurface.

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