Cleaned up text-input, editing, beginning FB SDK

Added 'clear msg' button to text input.

Changed text input to 'text area' to allow additional formatting of
inputs, including <br> tags for paragraph editing.

Messages sent on 'enter', new lines added when 'shift + enter' is
pressed.

Editing messages, submit on enter button, new lines on shift + enter.

Remove placeholder on inputs when focused.

Fixed 'Add a Friend' autocomplete issue (array was initialized and empty
when sent to autocomplete).

Began playing with FB SDK and adding OG data.