tweak pause/resume

src/core.py

@@ -758,12 +758,16 @@ Space:") + " " + nice_free)
         deluge_core.scrape_tracker(unique_ID)
 
     def pause(self, unique_ID):
+        state = self.get_torrent_state(unique_ID)
+        if not state["is_paused"]:
             try:
                 deluge_core.pause(unique_ID)
             except:
                 print "pause failed\n"
 
     def resume(self, unique_ID):
+        state = self.get_torrent_state(unique_ID)
+        if state["is_paused"]:
             try:
                 deluge_core.resume(unique_ID)
                 # We have to re-apply per torrent settings after resume. This has to
@@ -884,7 +888,6 @@ Space:") + " " + nice_free)
                 except DelugeError, e:
                     del self.state.torrents[torrent]
                     raise e
-
                 ret = unique_ID
                 self.unique_IDs[unique_ID] = torrent
                 self.state.torrents[torrent] = unique_ID