Add ✘ and ✔ marks to input fields.

[wisniewski94]

This should resolve issue related to error input fields on red background.
CSS only allowed.

Example:

[joshuiaclan]

Hi! Can I take this?

[wisniewski94]

Sure! Let me know if you need any help.

[joshuiaclan]

Allright! Thanks a lot.

[joshuiaclan]

Hi! Just to clarify. Am I gonna add the check, exclamation mark, and the x?

[wisniewski94]

@joshuiaclan check and the X is enough :). I don't see any purpose for the exclamation mark.

[joshuiaclan]

Okay, Thanks✌️

[joshuiaclan]

PR submitted please check and send feedback. Thank you :D

[wisniewski94]

Looks like you are the first contributor here :). I should make some CONTRIBUTORS.MD file or something.

I have noticed that you made pull request to wisniewski94:master from joshuiaclan:develop. Please send PRs to KeyboardUI:develop. I will leave my code review there because PR needs some changes before merging.

Thanks!