[kissmanga] fix download URLs and file extensions

The current Blogspot image URLs hosted on Kissmanga end with an
"invalid" query parameter (/000.png&upx=...), which doesn't get
recognized by 'spliturl()' and 'parseurl()' as such and gets therefore
included in the 'extension' field from 'text.nameext_from_url()'.

test/test_results.py

@@ -26,6 +26,7 @@ TRAVIS_SKIP = {
 
 # temporary issues, etc.
 BROKEN = {
+    "komikcast",
     "mangapark",
 }