Read icons from qa_errors.json when building data

Also adds support for the following error types:
- Objects mapped as both node/area or way/area
- Power lines that lead to nowhere
- Extra nodes in power lines (which should only go from support to
support to endpoint)
- Power line supports with no power lines

scripts/build_data.js

@@ -67,11 +67,8 @@ function buildData() {
   let faIcons = {
     'fas-i-cursor': {},
     'fas-lock': {},
-    'fas-long-arrow-alt-right': {},
     'fas-th-list': {},
-    'fas-user-cog': {},
-    'far-clone': {},
-    'fas-weight-hanging': {}
+    'fas-user-cog': {}
   };
 
   // The Noun Project icons used
@@ -92,7 +89,7 @@ function buildData() {
     'dist/data/*',
     'svg/fontawesome/*.svg',
   ]);
-
+  readQAErrorIcons(faIcons, tnpIcons);
   let categories = generateCategories(tstrings, faIcons, tnpIcons);
   let fields = generateFields(tstrings, faIcons, tnpIcons, searchableFieldIDs);
   let presets = generatePresets(tstrings, faIcons, tnpIcons, searchableFieldIDs);
@@ -174,6 +171,28 @@ function validate(file, instance, schema) {
 }
 
 
+function readQAErrorIcons(faIcons, tnpIcons) {
+  const qa = read('data/qa_errors.json');
+
+  for (const service in qa.services) {
+    for (const error in qa.services[service].errorTypes) {
+      const icon = qa.services[service]
+        .errorTypes[error]
+        .icon;
+
+      // fontawesome icon, remember for later
+      if (/^fa[srb]-/.test(icon)) {
+        faIcons[icon] = {};
+      }
+      // noun project icon, remember for later
+      if (/^tnp-/.test(icon)) {
+        tnpIcons[icon] = {};
+      }
+    }
+  }
+}
+
+
 function generateCategories(tstrings, faIcons, tnpIcons) {
   let categories = {};