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.

tests/LanguageTest.php

@@ -72,4 +72,13 @@ class LanguageTest extends TestCase
         }
     }
 
+    public function test_rtl_config_set_if_lang_is_rtl()
+    {
+        $this->asEditor();
+        $this->assertFalse(config('app.rtl'), "App RTL config should be false by default");
+        setting()->putUser($this->getEditor(), 'language', 'ar');
+        $this->get('/');
+        $this->assertTrue(config('app.rtl'), "App RTL config should have been set to true by middleware");
+    }
+
 }