Merge pull request #126 from muffato/release/77

bugfix: expand all sub-trees
Module had been broken by restructuring of format info
Make format-checking logic clearer - and get correct format name from info hash
Enabled use of ENSEMBL_WWW_PROXY for RemoteURL.pm
Merge pull request #128 from brucebolt/release/77

Enabled use of ENSEMBL_WWW_PROXY for RemoteURL.pm
Hack to get indexed VCF working again - will fix properly in next release!
scrolling between panels increased from 5s to 10s
Fix problem with variation links on sequence page.
Look for zebrafish RNAseq in otherfeatures database, as it doesn't have an rnaseq db.

N.B. Release-specific hack - do not merge into master!
Escape legend HTML (duplication in resequencing).
Fix for stickleback "groups" (chromosomes by another name)
RT #428984 : zmenus broken in LRG sequence display.
Fix missing legend on some LRGs.
Fix matrix ZMneu layouts.
Explicitly set format for ID mapper, as it's just a list rather than a proper format
Added default_action method so that tabs work properly
Don't zoom out beyond extremes of contig.