[SelectField] No longer rely on floatingLabelText to get correct styling

[tylermichael]

If you had a SelectField component without a floatingLabelText prop, you would end up getting a messed up looking component. This fixes that.

Also fixes #934.

[hai-cea]

@tylermichael Something still seems to be weird. Here's what I see when I remove the floatingLabelText

[tylermichael]

Hmm... Are you sure that you are on the correct branch? That picture is what I was seeing before I made these changes. I have pulled my branch on two separate machines, a Windows and a Mac, both showing the same thing.

What browser and OS are you using?

Here is what I am seeing:

After making a selection:

[tylermichael]

I think I see what you are doing now...

Are you doing something like this?

<SelectField
   value={this.state.selectValue2}
   onChange={this._handleSelectValueChange.bind(null, 'selectValue2')}
   menuItems={arbitraryArrayMenuItems} />

If so, working on a fix.

[tylermichael]

Alright check it out now. Here's what it looks like:

[oliviertassinari]

Oh, I made an other PR for the same issue, oups. #994

[hai-cea]

@oliviertassinari Is there any difference between yours and this one?
@tylermichael It's working for me now as well. Thanks.

[oliviertassinari]

@hai-cea From what I can see, I have less changes on the css.
I'm just using top: this.props.floatingLabelText ? 16 : -8,.
And this seems to be enough.

[hai-cea]

Thanks @tylermichael