Use new Compara_Alignments view, compatible with non-ajax browser
merge from branch-vega-49-dev
New glyphset for drawing read coverage wiggle plots
changed to work with read coverage collection data
fixed various parameter setting stuff
fixed drawing buglet
Tweak to method _url so it doesn't barf if no core parameters!
remove species list from text export
changes to work with read_coverage wiggle plot
updated to display track similar to that on transcript snp view, rather than wiggle plot
moved over to post e50 style code
generic code for alternative assemblies
typo
for new webcode
replaces ensemblclones.pm and vegaclones.pm
replaced by alternative_clones.pm#
replaced by alternative_clones.pm
set bumping to zero
add CCDS highlighting
support scaling across multiple tracks