core, setup: huge cleaning:

- moved directories from src and frontends/src to sat and sat_frontends, which is the recommanded naming convention
- move twisted directory to root
- removed all hacks from setup.py, and added missing dependencies, it is now clean
- use https URL for website in setup.py
- removed "Environment :: X11 Applications :: GTK", as wix is deprecated and removed
- renamed sat.sh to sat and fixed its installation
- added python_requires to specify Python version needed
- replaced glib2reactor which use deprecated code by gtk3reactor

sat can now be installed directly from virtualenv without using --system-site-packages anymore \o/

src/plugins/plugin_xep_0059.py

@@ -1,62 +0,0 @@
-#!/usr/bin/env python2
-# -*- coding: utf-8 -*-
-
-# SAT plugin for Result Set Management (XEP-0059)
-# Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
-# Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-from sat.core.i18n import _
-from sat.core.constants import Const as C
-from sat.core.log import getLogger
-log = getLogger(__name__)
-
-from wokkel import disco
-from wokkel import iwokkel
-from wokkel import rsm
-
-from twisted.words.protocols.jabber import xmlstream
-from zope.interface import implements
-
-
-PLUGIN_INFO = {
-    C.PI_NAME: "Result Set Management",
-    C.PI_IMPORT_NAME: "XEP-0059",
-    C.PI_TYPE: "XEP",
-    C.PI_PROTOCOLS: ["XEP-0059"],
-    C.PI_MAIN: "XEP_0059",
-    C.PI_HANDLER: "yes",
-    C.PI_DESCRIPTION: _("""Implementation of Result Set Management""")
-}
-
-
-class XEP_0059(object):
-    # XXX: RSM management is done directly in Wokkel.
-
-    def __init__(self, host):
-        log.info(_("Result Set Management plugin initialization"))
-
-    def getHandler(self, client):
-        return XEP_0059_handler()
-
-
-class XEP_0059_handler(xmlstream.XMPPHandler):
-    implements(iwokkel.IDisco)
-
-    def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
-        return [disco.DiscoFeature(rsm.NS_RSM)]
-
-    def getDiscoItems(self, requestor, target, nodeIdentifier=''):
-        return []