Add removal UI for both team and member; #1100

Teams can remove any of their members, members can remove themselves.

gittip/models/participant.py

@@ -444,6 +444,7 @@ def get_memberships(self, current_user):
         members.append(self.get_teams_membership())
         budget = balance = self.get_dollars_receiving()
         for member in members:
+            member['removal_allowed'] = current_user == self
             member['editing_allowed'] = False
             if member['username'] == current_user.username:
                 member['is_current_user'] = True

schema.sql

@@ -791,3 +791,23 @@ END;
 
 ALTER TABLE memberships ADD COLUMN recorder text NOT NULL
     REFERENCES participants(username) ON UPDATE CASCADE ON DELETE RESTRICT;
+
+
+-------------------------------------------------------------------------------
+-- Recreate the current_memberships view. It had been including participants
+-- who used to be members but weren't any longer.
+
+CREATE OR REPLACE VIEW current_memberships AS
+SELECT * FROM (
+
+    SELECT DISTINCT ON (member, team) m.*
+               FROM memberships m
+               JOIN participants p1 ON p1.username = member
+               JOIN participants p2 ON p2.username = team
+              WHERE p1.is_suspicious IS NOT TRUE
+                AND p2.is_suspicious IS NOT TRUE
+           ORDER BY member
+                  , team
+                  , mtime DESC
+
+) AS anon WHERE take > 0;

scss/team.scss

@@ -39,6 +39,10 @@
     TD.take.moderate { color: green; }
     TD.take.high { color: orange; }
     TD.take.max { color: red; }
+    SPAN.remove:hover {
+        text-decoration: line-through; 
+        cursor: pointer;
+    }
     #take INPUT {
         text-align: right;
         width: 48pt;