Added tag filter dialog.

assets/css/_forms.scss

@@ -0,0 +1,5 @@
+.form-heading {
+	margin: 0 0 .5rem 0;
+	font-size: 1rem;
+	font-weight: bold;
+}

assets/css/style.scss

@@ -1,4 +1,5 @@
 @import 'theme';
+@import 'forms';
 @import 'inputs';
 @import 'states';
 @import 'tooltip';