Greasemonkey: Match against percent encoded urls only.

This change requires urls specified in @include, @exclude and @matches
directives in metadata blocks to be in the same form that
QUrl.toEncoded() returns. That is a punycoded domain and percent encoded
path and query. This seems to be what Tampermonkey on chrome expects to.

Also changes the scripts_for() function to take a QUrl arg so the caller
doesn't need to worry about encodings.

qutebrowser/browser/greasemonkey.py

@@ -181,9 +181,10 @@ class GreasemonkeyManager(QObject):
         returns a tuple of lists of scripts meant to run at (document-start,
         document-end, document-idle)
         """
-        if url.split(':', 1)[0] not in self.greaseable_schemes:
+        if url.scheme() not in self.greaseable_schemes:
             return MatchingScripts(url, [], [], [])
-        match = functools.partial(fnmatch.fnmatch, url)
+        match = functools.partial(fnmatch.fnmatch,
+                                  str(url.toEncoded(), 'utf-8'))
         tester = (lambda script:
                   any([match(pat) for pat in script.includes]) and
                   not any([match(pat) for pat in script.excludes]))

qutebrowser/browser/webkit/webpage.py

@@ -300,7 +300,7 @@ class BrowserPage(QWebPage):
         """
         greasemonkey = objreg.get('greasemonkey')
         url = self.currentFrame().url()
-        scripts = greasemonkey.scripts_for(url.toDisplayString())
+        scripts = greasemonkey.scripts_for(url)
 
         if load == "start":
             toload = scripts.start