Unify english language: Use 'email' instead of 'e-mail'.

MessengerProj/src/main/java/com/b44t/messenger/ContactsController.java

@@ -196,7 +196,7 @@ public class ContactsController {
         final String email = tempEmail;
         final String fallbackName = tempName;
 
-        // bind e-mail+name address to view object to detect overwrites and discard loading old images (may happen on fast scrolling)
+        // bind email+name address to view object to detect overwrites and discard loading old images (may happen on fast scrolling)
         // moreover, check if the avatar is in cache
         AvtCacheEntry cacheEntry;
         synchronized (s_sync) {

MessengerProj/src/main/java/com/b44t/messenger/MrChat.java

@@ -145,7 +145,7 @@ public class MrChat {
 
     public String getNameNAddr()
     {
-        // returns name of group chats or name+e-mail-address for normal chats
+        // returns name of group chats or name+email-address for normal chats
         String name = "ErrGrpNameNAddr";
         if( getType()==MR_CHAT_GROUP ) {
             name = getName();

MessengerProj/src/main/java/com/b44t/ui/ChatActivity.java

@@ -439,8 +439,8 @@ public class ChatActivity extends BaseFragment implements NotificationCenter.Not
                 }
                 else if ( id == ID_DELETE_CHAT)
                 {
-                    // as the history may be a mix of messenger-messages and e-mails, it is not safe to delete it.
-                    // the user can delete explicit messages or use his e-mail programm to delete masses.
+                    // as the history may be a mix of messenger-messages and emails, it is not safe to delete it.
+                    // the user can delete explicit messages or use his email programm to delete masses.
                     if (getParentActivity() == null) {
                         return;
                     }