Greasemonkey: Lift greasemonkey init app.py

To prepare for multiple-backend support.

qutebrowser/app.py

@@ -64,7 +64,7 @@ from qutebrowser.completion.models import miscmodels
 from qutebrowser.commands import cmdutils, runners, cmdexc
 from qutebrowser.config import config, websettings, configfiles, configinit
 from qutebrowser.browser import (urlmarks, adblock, history, browsertab,
-                                 downloads)
+                                 downloads, greasemonkey)
 from qutebrowser.browser.network import proxy
 from qutebrowser.browser.webkit import cookies, cache
 from qutebrowser.browser.webkit.network import networkmanager
@@ -491,6 +491,10 @@ def _init_modules(args, crash_handler):
     diskcache = cache.DiskCache(standarddir.cache(), parent=qApp)
     objreg.register('cache', diskcache)
 
+    log.init.debug("Initializing Greasemonkey...")
+    gm_manager = greasemonkey.GreasemonkeyManager()
+    objreg.register('greasemonkey', gm_manager)
+
     log.init.debug("Misc initialization...")
     macros.init()
     # Init backend-specific stuff

qutebrowser/browser/browsertab.py

@@ -31,7 +31,7 @@ from qutebrowser.keyinput import modeman
 from qutebrowser.config import config
 from qutebrowser.utils import utils, objreg, usertypes, log, qtutils
 from qutebrowser.misc import miscwidgets, objects
-from qutebrowser.browser import mouse, hints, greasemonkey
+from qutebrowser.browser import mouse, hints
 
 
 tab_id_gen = itertools.count(0)
@@ -64,10 +64,6 @@ def init():
         from qutebrowser.browser.webengine import webenginetab
         webenginetab.init()
 
-    log.init.debug("Initializing Greasemonkey...")
-    gm_manager = greasemonkey.GreasemonkeyManager()
-    objreg.register('greasemonkey', gm_manager)
-
 
 class WebTabError(Exception):