SelectField styling issues

[mkotar]

Below you can see two problems with SelectField - one is the wrong position and the second is that hintText is present even if the value is selected.

also I think that SelectField needs some more methods: getValue() setValue() clearValue()

[lenage]

I also found same issue,

SelectFiled using TextField for FloatingLabelText and hintText, so, it's possible to fix it in TextField?

[havardge]

Same issue here.

[bendiy]

Duplicate of #1427