add support for text alignment roles (text-*)

Author: mojavelinux

src/css/doc.css

@@ -202,6 +202,22 @@
   clear: both;
 }
 
+.doc .text-left {
+  text-align: left;
+}
+
+.doc .text-center {
+  text-align: center;
+}
+
+.doc .text-right {
+  text-align: right;
+}
+
+.doc .text-justify {
+  text-align: justify;
+}
+
 .doc .stretch {
   width: 100%;
 }