Do not unfocus the chat field, so keyboard does not hides

[willyaranda]

No description provided.

[Gioyik]

This is necessary feature, it's a little annoying select every time the text box to write a message. I did a commit with a partial fix for this, because it works when you write a message and you send it using the enter key from the keyboard. But it doesn't work if you write a message and you click on the left icon to send it. I will take a look again in the night.