define special hooks for install wizard

lib/plugins.py

@@ -40,12 +40,13 @@ def hook(func):
 
 
 def run_hook(name, *args):
+    SPECIAL_HOOKS = ['add_wallet_types', 'get_wizard_action']
     results = []
     f_list = hooks.get(name,[])
     for p, f in f_list:
         if name == 'load_wallet':
             p.wallet = args[0]
-        if p.is_enabled():
+        if name in SPECIAL_HOOKS or p.is_enabled():
             try:
                 r = f(*args)
             except Exception:

plugins/trustedcoin.py

@@ -344,8 +344,6 @@ class Plugin(BasePlugin):
 
     @hook
     def load_wallet(self, wallet):
-        self.wallet = wallet
-        if self.is_enabled():
         self.trustedcoin_button = StatusBarButton( QIcon(":icons/trustedcoin.png"), _("Network"), self.settings_dialog)
         self.window.statusBar().addPermanentWidget(self.trustedcoin_button)
         self.xpub = self.wallet.master_public_keys.get('x1/')