Adds category method to recursively remove constraints from a view.
Starts to get buttons constrained.
Gets SYMFilePickerView's layout to the point where the button container looks great, but the top content container still needs some work.
Removes background color from button container.
Removes unnecessary override of -awakeFromNib from SYMFilePickerView.
Corrects layout of SYMFilePickerView's topContentContainer. At this point SYMFilePickerView's layout is complete.