Need more vertical space for total reads panel for narrow screen layout.
Fix issue #14 by sorting estimated read length data by position when BAM loaded as local file so that the Read Depth line chart renders as expected (with no 'backward' lines).
Strip ch or chr prefix from reference name to match names between .bam and .bed.  This is a temporary workaround; going forward we probably need a lookup table with aliases.
Merge branch 'gh-pages'