elm_colorselector: Fixed to make palette_box have proper height
elm_colorselector: Fixed to make palette_box have proper height

Summary:
palette_box had stretched height exceeding its items size.
Now it will have proper height fitting to own items.

Reviewers: Hermet, Jaehyun, raster

Reviewed By: raster

Subscribers: raster, Hermet

Differential Revision: https://phab.enlightenment.org/D1840

rvandegrift/elementary,FlorentRevest/Elementary,tasn/elementary,rvandegrift/elementary,rvandegrift/elementary,FlorentRevest/Elementary,tasn/elementary,tasn/elementary,FlorentRevest/Elementary,tasn/elementary,tasn/elementary,FlorentRevest/Elementary,rvandegrift/elementary