Added vertical scroll bar
Increased the width of the vertical scroll bar.
Changed vertical scroll bar css.
Added new track type
Ignores unknown bases (temporary?)
Removed hard-coded elements
Changed deletion parsing
Added title attributes
Changed title attribute handling
Added mouseover coverage summary.
Added time delay to _makeScoreDisplay
fixed flickering flag bug
Edited coverage summary to handle cases where there is no matched coverage
probable SNP indicators added
changed snp indicators and disabled snp coverage at low zoom
Merge branch 'master' into jsmithro_snpcoverage

Conflicts:
	main.css
	src/JBrowse/View/Track/Alignments.js
improve display of BaseCoverage scores
bugfix to WiggleBase mouseout evt
include the base of the reference sequence in the score display for BaseCoverage tracks
tweak fill color logic