Themes empty view
set empty view text for Themes
Merge remote-tracking branch 'origin/release/3.5' into issue/2022-theme-loading-indicator
Merge branch 'develop' into issue/2022-theme-loading-indicator
Merge branch 'develop' into issue/2022-theme-loading-indicator
fix npe
check if fragment isAdded when a swipe to refresh gesture is detected and fires a refresh
Merge pull request #2112 from wordpress-mobile/issue/2022-theme-loading-indicator

fix #2022: set a "Themes fetching..." text in empty view when themes are not cached