fix message word wrap (#265)

Author: alvita

src/components/ConversationMessageList/styles.scss

@@ -47,13 +47,17 @@
   min-width: 50%;
   max-width: 60%;
   text-align: left;
-  word-break: break-word;
   hyphens: auto;
   padding: 10px 15px;
   background: $sms-bubble-background-color;
   border-radius: 16px;
   min-height: 13px;
   box-sizing: content-box;
+  /* For Firefox */
+  white-space: pre-wrap;
+  word-break: break-all;
+  /* For Chrome and IE */
+  word-wrap: break-word;
 }
 
 .messageBody.inbound {