Add widget align top modifier

[felipeorlando]

CHANGELOG 📝

• This is a propose for widget class, adding a --align-top top modifier that solve the flex problem in some cases that we want to height between elements to different.

Before:

After:

[felipeorlando]

@eduardojmatos Additional in our discussion, create a container modifier with display: block it will broken it's internal element. We want to avoid the use of float attrs, right? 🙂

[nathpaiva]

@felipeorlando this solution is it ok on IE?

[felipeorlando]

@nathpaiva Yes! As we expected. 😃