finish separation between plugins and GUIs

plugins/labels/__init__.py

@@ -0,0 +1,9 @@
+from electrum.i18n import _
+
+fullname = _('LabelSync')
+description = '\n'.join([
+    _("Synchronize your labels across multiple Electrum installs by using a remote database to save your data. Labels, transactions ids and addresses are encrypted before they are sent to the remote server."),
+    _("The label sync's server software is open-source as well and can be found on github.com/maran/electrum-sync-server")
+])
+available_for = ['qt', 'kivy']
+