Add Pastebin backend and Paste capability

It is able to get a paste, and post a new one.
Only the contents and title fields are supported for now.

weboob/backends/pastebin/backend.py

@@ -0,0 +1,55 @@
+# -*- coding: utf-8 -*-
+
+# Copyright(C) 2011 Laurent Bachelier
+#
+# This file is part of weboob.
+#
+# weboob 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.
+#
+# weboob 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 weboob. If not, see <http://www.gnu.org/licenses/>.
+
+
+from weboob.capabilities.paste import ICapPaste
+from weboob.tools.backend import BaseBackend
+
+from .browser import PastebinBrowser
+from .paste import PastebinPaste
+
+
+__all__ = ['PastebinBackend']
+
+
+class PastebinBackend(BaseBackend, ICapPaste):
+    NAME = 'pastebin'
+    MAINTAINER = 'Laurent Bachelier'
+    EMAIL = 'laurent@bachelier.name'
+    VERSION = '0.8'
+    DESCRIPTION = 'Pastebin paste tool'
+    LICENSE = 'AGPLv3+'
+    BROWSER = PastebinBrowser
+
+    def get_paste(self, _id):
+        paste = PastebinPaste(_id)
+        self.browser.fill_paste(paste)
+        return paste
+
+    def fill_paste(self, paste, fields):
+        self.browser.fill_paste(paste)
+        if 'contents' in fields:
+            contents = self.browser.get_contents(paste.id)
+            paste.contents = contents
+        return paste
+
+    def post_paste(self, paste):
+        self.browser.post_paste(paste)
+
+    OBJECTS = {PastebinPaste: fill_paste}