Don't quit sync threads if path wasn't found

- Partially fixes #333

resources/lib/artwork.py

@@ -126,8 +126,9 @@ def double_urldecode(text):
     return unquote(unquote(text))
 
 
-@thread_methods(add_stops=['STOP_SYNC'],
-                add_suspends=['SUSPEND_LIBRARY_THREAD', 'DB_SCAN'])
+@thread_methods(add_suspends=['SUSPEND_LIBRARY_THREAD',
+                              'DB_SCAN',
+                              'STOP_SYNC'])
 class Image_Cache_Thread(Thread):
     xbmc_host = 'localhost'
     xbmc_port, xbmc_username, xbmc_password = setKodiWebServerDetails()

resources/lib/library_sync/fanart.py

@@ -17,8 +17,9 @@ log = getLogger("PLEX."+__name__)
 ###############################################################################
 
 
-@thread_methods(add_suspends=['SUSPEND_LIBRARY_THREAD', 'DB_SCAN'],
-                add_stops=['STOP_SYNC'])
+@thread_methods(add_suspends=['SUSPEND_LIBRARY_THREAD',
+                              'DB_SCAN',
+                              'STOP_SYNC'])
 class Process_Fanart_Thread(Thread):
     """
     Threaded download of additional fanart in the background

resources/lib/librarysync.py

@@ -37,8 +37,7 @@ log = getLogger("PLEX."+__name__)
 ###############################################################################
 
 
-@thread_methods(add_stops=['STOP_SYNC'],
-                add_suspends=['SUSPEND_LIBRARY_THREAD'])
+@thread_methods(add_suspends=['SUSPEND_LIBRARY_THREAD', 'STOP_SYNC'])
 class LibrarySync(Thread):
     """
     """