Deselect the 90 degrees button when rotated by specific value

[laoneo]

Pull Request for Issue #513.

Summary of Changes

Rests some classes when rotating an image by the number field.

Testing Instructions

• Edit an image
• Open the rotate tab
• Click on the 90 degrees button
• Set a number like 100 in the input box

Expected result

90 degrees button got deselected.

Actual result

90 degrees button is still in selected state.