- Make the discovery information be preloaded via a bootstrap.js file before angular runs

- Have ApiService generate all the api methods specified by the API discovery information
- Change all call sites (except for a select few when it does not make sense) to use ApiService

static/js/bootstrap.js

@@ -0,0 +1,13 @@
+ $.ajax({
+    type: 'GET',
+    async: false,
+    url:  '/api/discovery',
+    success: function(data) {
+      window.__endpoints = data.endpoints;
+    },
+    error: function() {
+      setTimeout(function() {
+        $('#couldnotloadModal').modal({});
+      }, 250);
+    }
+ });