Disable spell checking globally

#759

app/assets/javascripts/admin-manifest.coffee

@@ -9,6 +9,7 @@
 #= require select2
 #= require jquery.doubleScroll
 #= require datepicker
+#= require spell_check
 #= require admin/application
 #= require admin/app
 #= require_tree ./admin

app/assets/javascripts/registrant-manifest.coffee

@@ -4,4 +4,5 @@
 #= require jquery-ui/datepicker
 #= require select2
 #= require datepicker
+#= require spell_check
 #= require shared/general

app/assets/javascripts/registrar-manifest.coffee

@@ -6,6 +6,7 @@
 #= require jquery-ui/datepicker
 #= require select2
 #= require datepicker
+#= require spell_check
 #= require shared/general
 #= require registrar/autocomplete
 #= require registrar/application

app/assets/javascripts/spell_check.js

@@ -0,0 +1,12 @@
+(function() {
+    function disableSpellCheck() {
+        let selector = 'input[type=text], textarea';
+        let textFields = document.querySelectorAll(selector);
+
+        for (let field of textFields) {
+            field.spellcheck = false;
+        }
+    }
+
+    disableSpellCheck();
+})();