Made sure image loading from ComicVine also obeys Comic Vines new speed

limit.   In fact, adjust the speed limit so that the app doesn't access
Comic Vine more than once every 2 seconds.

src/py/database/comicvine/cvconnection.py

@@ -33,7 +33,7 @@
 __next_query_time_ms = 0
 
 # the amount of time to wait between queries
-__QUERY_DELAY_MS = 1500 
+__QUERY_DELAY_MS = 2000 
 
 # =============================================================================
 def _query_series_ids_dom(API_KEY, searchterm_s, page_n=1):
@@ -223,7 +223,7 @@ def __get_page(url):
    may be thrown.   If the exception is a DatabaseConnectionError, that 
    represents an problem connecting to the Comic Vine database.
    '''
-   __wait_until_ready() # throttle to keep use from going too fast
+   wait_until_ready() # throttle request speed to make ComicVine happy
 
    try:
       return utils.get_html_string(url)
@@ -255,7 +255,7 @@ def is_valid_xml(c):
    return xml
 
 # =============================================================================
-def __wait_until_ready():
+def wait_until_ready():
    '''
    Waits until a fixed amount of time has passed since this function was 
    last called.  Returns immediately if that much time has already passed.

src/py/database/comicvine/cvdb.py

@@ -424,6 +424,7 @@ def _query_image( ref, lasttry = False ):
       response = None
       response_stream = None
       try:
+         cvconnection.wait_until_ready() # throttle our request speed 
          request = WebRequest.Create(image_url_s)
          response = request.GetResponse()
          response_stream = response.GetResponseStream()