Don't require webob as dependency

It is pushing up the daisies. Also relnote the change.

docs/source/build/mediagoblin-licenses/mediagoblin_licenses/README.rst

@@ -0,0 +1,15 @@
+================
+ Custom Licenses
+================
+
+Enable by configuring all custom licenses in the form of:
+license_x=Abbreviation, Full Name, URL to license
+
+Make sure to only insert one line per license without line breaks.
+
+E.g. do this into mediagoblin_local.ini:
+[[mediagoblin_licenses]]
+license_1=Chicken Dance, Chicken Dance License v1.0, https://raw.github.com/supertunaman/cdl/f0ae734f4abce311070ac0c401dbc0230cbc4344/COPYING
+license_2=WTFPL, Do What the Fuck Public License v2.0, http://sam.zoy.org/wtfpl/
+
+This plugin is licensed under the GNU APGL v3+.

docs/source/build/mediagoblin-licenses/mediagoblin_licenses/__init__.py

@@ -0,0 +1,69 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# 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 __future__ import unicode_literals
+
+import logging
+from mediagoblin.tools.pluginapi import get_config
+from mediagoblin.tools import licenses
+
+__VERSION__ = '0.1.2' # releases get numbers, post release a "+" appended
+_log = logging.getLogger(__name__)
+
+SORTED_PLUGIN_LICENSES = []
+"""This is the equivalent of MG.tools.licenses.SORTED_LICENSES
+that we want to replace"""
+
+
+class CustomLicenses(object):
+    _setup_plugin_called = 0
+
+    @classmethod
+    def setup_plugin(cls):
+        if cls._setup_plugin_called:
+            return # Only set up once
+        cls._setup_plugin_called += 1
+        _log.info('Configurable license plugin setting up!')
+        # Get configured licenses
+        config = get_config(cls.__module__)
+        if not config:
+            _log.warn('There are no licenses configured at all.')
+            return # Nothing configured, nothing to do...
+
+        for k,v in config.iteritems():
+            if not k.lower().startswith('license_'):
+                continue
+            (abbrev, name, url) =  config.as_list(k)
+            _log.info("Adding license: {0}".format(abbrev))
+            SORTED_PLUGIN_LICENSES.append(licenses.License(abbrev, name, url))
+
+        # Set the regular license list to our custom ones:
+        licenses.SORTED_LICENSES = SORTED_PLUGIN_LICENSES
+        # create dict {url: License,...} to enable fast license lookup by url.
+
+        # The data structure in
+        # mediagoblin.tools.licenses.SUPPORTED_LICENSES and SORTED_LICENSES
+        # is really not optimal. What we want there is a "OrderedDict" that
+        # can give us order AND quick lookup by key at the same time. But as
+        # that is python >=2.7 and we have to deal with python 2.6, we'll
+        # live with the data duplication in 2 structures for now. It's not
+        # like we are going to have hundreds of licenses, fortunately.
+        licenses.SUPPORTED_LICENSES = dict(((l.uri, l) for l in \
+                                                SORTED_PLUGIN_LICENSES))
+
+
+hooks = {
+    'setup': CustomLicenses.setup_plugin
+    }