Added base RTL support

For #939

- Adds way to check if current language is RTL via config system.
- Made TinyMCE default direction be based on current language text
direction.
- Fixed bullet points to be RTL compatible.
- Set page content body to have direction based on content.

resources/assets/js/services/code.js

@@ -157,6 +157,7 @@ function wysiwygView(elem) {
 
     newWrap.className = 'CodeMirrorContainer';
     newWrap.setAttribute('data-lang', lang);
+    newWrap.setAttribute('dir', 'ltr');
     newTextArea.style.display = 'none';
     elem.parentNode.replaceChild(newWrap, elem);