Add dev_commit.sh helper and no-emoji mandate

wp-includes/blocks/categories/style.css

@@ -0,0 +1,16 @@
+.wp-block-categories{
+  box-sizing:border-box;
+}
+.wp-block-categories.alignleft{
+  margin-right:2em;
+}
+.wp-block-categories.alignright{
+  margin-left:2em;
+}
+.wp-block-categories.wp-block-categories-dropdown.aligncenter{
+  text-align:center;
+}
+.wp-block-categories .wp-block-categories__label{
+  display:block;
+  width:100%;
+}