core, bridge: new signal actionNew to launch an action from the backend (e.g. display a dialog message): - SAT.actionNew is a shortcut to call bridge.actionNew with a generated id. The id may be used in the future to ignore an action (e.g.: an action is sent to all frontends to accept a file, one of the frontend did manage the dialog, the other ones can then ignore this dialog), but is not used for now.

Use this module to temporary store files that need to be integrated to other
projects such as Wokkel.

For example, the changeset that introduced this folder adds RSM (XEP-0059)
support to Wokkel. The files in sat.tmp.wokkel are imported over the initial
wokkel files from sat.plugins.__init__.py