[INTERNAL][FIX] sap.m.Tokenizer: Fix for highlight issue on
touch-enabled devices

On touch-enabled devices (Galaxy S3, iPhone 5S) the style for :hover
state was applied upon press (i.e. touch) and remained displayed even
after the press (touch) has ended. So the element ended up with the
wrong style (@sapHCHighlightBG background instead of
@sapHCHighlightAltBG background).

Fixed by narrowing-down :hover selector to desktop browsers only.

Change-Id: I012e5d75bdc72d3340c6f4341360bbae02e11427
Merge "[INTERNAL][FIX] sap.m.Tokenizer: Fix for highlight issue on touch-enabled devices"