Add ellipsis to actions that open up a dialog. It doesn't seem to work for Twitter, probably because it's different to the other plugins.
Quote from VDG:
If there will be further user input needed and a dialogue or similar popping up for it: needs ellipsis
Therefore Pastebin would not need one, but I guess this is neglectable
This results in every item in the menu getting an ellipsis, which isn't appropriate because not all of them require more user action to proceed (the imgur plugin is one such example). It seems like we need a way to indicate in the desktop file that the plugin will require user interaction and need an ellipsis displayed in the UI, without hardcoding that information with an ellipsis in the plugin's own name.