add ability for admin to delete any topics and synapses

app/assets/javascripts/src/Metamaps.js

@@ -2776,7 +2776,7 @@ Metamaps.Control = {
         var node = Metamaps.Visualize.mGraph.graph.getNode(nodeid);
         var topic = node.getData('topic');
         
-        var permToDelete = Metamaps.Active.Mapper.id === topic.get('user_id');
+        var permToDelete = Metamaps.Active.Mapper.id === topic.get('user_id') || Metamaps.Active.Mapper.get('admin');
         if (permToDelete) {
             var topicid = topic.id;
             var mapping = node.getData('mapping');
@@ -2945,7 +2945,7 @@ Metamaps.Control = {
         var synapse = edge.getData("synapses")[index];
         var mapping = edge.getData("mappings")[index];
             
-        var permToDelete = Metamaps.Active.Mapper.id === synapse.get('user_id');
+        var permToDelete = Metamaps.Active.Mapper.id === synapse.get('user_id') || Metamaps.Active.Mapper.get('admin');
         if (permToDelete) {
             if (edge.getData("synapses").length - 1 === 0) {
                 Metamaps.Control.hideEdge(edge);

app/models/synapse.rb

@@ -41,10 +41,10 @@ class Synapse < ActiveRecord::Base
   end
 
   def authorize_to_delete(user)  
-    if (self.user != user)
-      return false
+    if (self.user == user || user.admin)
+      return self
     end
-    return self
+    return false
   end
   
   # returns Boolean if user allowed to view Topic, Synapse, or Map

app/models/topic.rb

@@ -112,10 +112,10 @@ class Topic < ActiveRecord::Base
   end
 
   def authorize_to_delete(user)  
-    if (self.user != user)
-      return false
+    if (self.user == user || user.admin)
+      return self
     end
-    return self
+    return false
   end
   
   # returns Boolean if user allowed to view Topic, Synapse, or Map

app/models/user.rb

@@ -45,7 +45,8 @@ class User < ActiveRecord::Base
   def as_json(options={})
     { :id => self.id,
       :name => self.name,
-      :image => self.image.url(:sixtyfour)
+      :image => self.image.url(:sixtyfour),
+      :admin => self.admin
     }
   end