Hints for gnome-calendar in main

Warnings

• asv-description-para-markup-invalid
  org.gnome.Calendar.appdata.xml:699 - ul
  This description paragraph contains invalid markup. Currently, only <em/> and <code/> are permitted.
• asv-description-para-markup-invalid
  org.gnome.Calendar.appdata.xml:450 - ul
  This description paragraph contains invalid markup. Currently, only <em/> and <code/> are permitted.
• asv-description-para-markup-invalid
  org.gnome.Calendar.appdata.xml:523 - ul
  This description paragraph contains invalid markup. Currently, only <em/> and <code/> are permitted.
• asv-description-para-markup-invalid
  org.gnome.Calendar.appdata.xml:685 - ul
  This description paragraph contains invalid markup. Currently, only <em/> and <code/> are permitted.
• asv-description-para-markup-invalid
  org.gnome.Calendar.appdata.xml:422 - ul
  This description paragraph contains invalid markup. Currently, only <em/> and <code/> are permitted.
• asv-description-para-markup-invalid
  org.gnome.Calendar.appdata.xml:514 - ul
  This description paragraph contains invalid markup. Currently, only <em/> and <code/> are permitted.
• asv-description-para-markup-invalid
  org.gnome.Calendar.appdata.xml:437 - ul
  This description paragraph contains invalid markup. Currently, only <em/> and <code/> are permitted.
• translations-not-found
  Unable to add languages information, even though a translation tag was present in the MetaInfo file. Please check that its value is set correctly, and all locale files are placed in the right directories (e.g. /usr/share/locale/*/LC_MESSAGES/ for Gettext .mo files).