Stop auto capitalization of case sensitive fields on mobile devices
On many mobile devices, when logging in to Tryton using Sao, the text entered into the username field will automatically start with a capital letter followed by lowercase letters.
As the username is case sensitive this behaviour is not helpful, and it should be left to the user to enter it in with the correct case.
This can be done by using the autocapitalize attribute: https://caniuse.com/#feat=mdn-html_global_attributes_autocapitalize