core: fixed launchAction: - getClient now raise a NotFound error if client is not available - errors ConnectedProfileError, NotConnectedProfileError anf ProfileKeyUnknownError renamed for consistency (all profile error must prefixed by Profile) - launchAction fixed, the case where client is not available is handled - kept actions are actuall1y removed on launchAction

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