[gnome-software] (18 commits) ...Merge branch '1111-app-context-tiles' into 'master'

[Philip Withnall <pwithnall src gnome org>]

Summary of changes:

  2754cb9... gs-app: Drop redundant PROP_0 enum member
  bd382b5... gs-app: Define a typedef for properties
  4b73d26... gs-app: Drop PROP_LAST
  2d9b22a... gs-app: Clean up dispose() method by using g_clear_object()
  01b5c34... gs-app: Add G_PARAM_STATIC_STRINGS to all properties
  987c21a... gs-app: Add a GsApp:content-rating property
  b267af6... gs-app: Add a GsApp:license property
  6a301e3... gs-app: Add GsApp:size-download and :size-installed propert
  a97e74b... gs-app: Add a GsApp:permissions property
  ce8525f... gs-app-context-bar: Add a new context tile bar widget and u
  5a5cf7f... gs-details-page: Drop the download/installed size details
  efc0eb0... gs-details-page: Drop the app permissions details
  ea7f9d4... gs-details-page: Drop the app content rating details
  5169c17... gs-details-page: Drop the app licensing details
  7e681fd... gs-details-page: Drop the app category details
  657bbae... gs-details-page: Drop kudo row for sandboxing
  d17038a... gs-app-context-bar: Use short forms of content ratings wher
  7f3079e... Merge branch '1111-app-context-tiles' into 'master'