Changes to Infolines::Vertical Speed Indicator

Change "Vertical Speed Indicator" to "Vertical Speed Required" since this really isn't a VSI.
Allow VSR to be displayed beyond 30 miles to destination.
Change sign from always + to + or - (- indicates you need to go down).
Cleanup the code a bit.
NOTE: I believe the diff is showing every line changed in InfoLines.java because someone checked it in with incorrect line endings.  My commit should fix this (I hope)