BHV-6710: Set font explicitly for Spinner balls.

Issue
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In a non-latin locale, a different font is used, which causes the balls of the Spinner to render differently than intended.

Fix
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We explicitly set the font for the Spinner balls. Also, we preserve a clockwise spinner direction for RTL mode as well.

Notes
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A few adjustments for the spinner text position were made as well, to match the original Spinner, but this could be slightly off if a different font other than MuseoSans is used for the text. I would appreciate extra checking of this change. :)

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>