finish separation between plugins and GUIs

plugins/cosigner_pool/__init__.py

@@ -0,0 +1,9 @@
+from electrum.i18n import _
+fullname = _('Cosigner Pool')
+description = ' '.join([
+    _("This plugin facilitates the use of multi-signatures wallets."),
+    _("It sends and receives partially signed transactions from/to your cosigner wallet."),
+    _("Transactions are encrypted and stored on a remote server.")
+])
+requires_wallet_type = ['2of2', '2of3']
+available_for = ['qt']