Style fixups to pass pep checks

This fixes the style issues introduced in the patches for the new
release notes styles. Clearly a broken verification hook somewhere.

pgweb/core/templatetags/pgfilters.py

@@ -71,6 +71,7 @@ def dictlookup(value, key):
 def tojson(value):
     return json.dumps(value)
 
+
 @register.filter()
 def release_notes_pg_minor_version(minor_version, major_version):
     """Formats the minor version number to the appropriate PostgreSQL version.

pgweb/docs/views.py

@@ -176,6 +176,7 @@ def manualarchive(request):
         'versions': [_VersionPdfWrapper(v) for v in versions],
     })
 
+
 def release_notes(request, major_version=None, minor_version=None):
     """Contains the main archive of release notes."""
     # this query gets a list of a unique set of release notes for each version of
@@ -274,6 +275,7 @@ def release_notes(request, major_version=None, minor_version=None):
         context = {'release_notes': release_notes}
     return render_pgweb(request, 'docs', 'docs/release_notes.html', context)
 
+
 @login_required
 def commentform(request, itemid, version, filename):
     if version == 'current':

pgweb/util/db.py

@@ -1,5 +1,6 @@
 from django.db import connection
 
+
 def exec_to_dict(query, params=None):
     curs = connection.cursor()
     curs.execute(query, params)