Update pyScss dependency to 1.2.0.post3.

Whatever that means.
Animate TopBar into view on login.

Resolves #247, Closes #268.
Issue #250. Fixed the appearance of the Log Out button in the topbar. However, even after disabling box-shadow for all buttons in the top bar, there is still a shadow on the Log Out button and I am unsure how to fix this.
Issue #250. \n Fixed spacing.
issue #250. Removed logout id and topbarbutton class from LogoutButton component.
issue #250. Removed entire logout id.
issue #250. Fixed the spacing.
issue #250. Changed topbarbutton class back to the original code.
issue #250. The box-shadow property of button.scss was overrided.