Added WebApollo favicon
Added custom rendering for CIGAR I/D/=/X subfeatures.
Fixed bug in Store/SeqFeature/BAM/LazyFeature.js that affects Alignments rendering, end coord of aligned read in viewed sequence was not calculated correctly when read CIGAR string contained inserts, soft clips, or hard clips.  Tried to do this as a cherry-pick, as this is also fixed in GMOD/jbrowse in commit #259e29eaff, but that commit also contained refactoring of other files that made cherry-pick unfeasible.
Minor tweaks to CIGAR-based subfeature rendering