Hints for vorta in main

Warnings

• asv-web-url-expected
  com.borgbase.Vorta.appdata.xml:36 - /usr/share/vorta/Screenshot-3-Schedule.png
  A web URL was expected for this value.
• asv-web-url-expected
  com.borgbase.Vorta.appdata.xml:30 - /usr/share/vorta/Screenshot-1-Repository.png
  A web URL was expected for this value.
• asv-web-url-expected
  com.borgbase.Vorta.appdata.xml:33 - /usr/share/vorta/Screenshot-2-Sources.png
  A web URL was expected for this value.
• asv-web-url-expected
  com.borgbase.Vorta.appdata.xml:39 - /usr/share/vorta/Screenshot-4-Archives.png
  A web URL was expected for this value.
• screenshot-download-error
  Error while downloading screenshot from '/usr/share/vorta/Screenshot-1-Repository.png': No such file '%s'
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from '/usr/share/vorta/Screenshot-2-Sources.png': No such file '%s'
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from '/usr/share/vorta/Screenshot-3-Schedule.png': No such file '%s'
  This might be a temporary server issue, or the screenshot is no longer available.
• screenshot-download-error
  Error while downloading screenshot from '/usr/share/vorta/Screenshot-4-Archives.png': No such file '%s'
  This might be a temporary server issue, or the screenshot is no longer available.