Typo noticed while attempting to trace fastcgi mouseover issue.
Modifications to allow pre-loading of datasources to be configurable
via GBrowse.conf.

Issue is that pre-loading of the large numbers of datasources can result in endless
start up of fastcgi processes until no memory remains on server.
Replicated changes from gbrowse needed to prevent pre-load of datasources to gbrowse_img
BLAT hits are not necessarily reported in best-to-worst order. Read all
blat hits and sort by calculated score (percent query coverage).

Add 1 to start coordinates, as Start coordinates in BLAT PSL output are
0-based, not 1-based.

Strand needs to be +1/-1 (rather than "+" or "-") in order for
Bio::SeqFeature::Lite (base class of Bio::Graphics::Feature) to
correctly interpret them (though there is a pull request to fix this:
    https://github.com/bioperl/bioperl-live/pull/71
Make end > start for - strand features in FeatureFile output.
Allow user to select dna/rna query & specify minimum percent identity.
Remove unused check_seq() subroutine.
Fix issue where Bio::Graphics::Browser2::RegionSearch::search_features
"uniqueifies" results where the type and start & end locations are the same,
despite a comment stating that name & type should be uniqueifying criteria,
by adding display_name to the mix.
Restore the behavior whereby small features are displayed in the
karyotype display using the diamond glyph, greatly improving their visibility,
and larger features are displayed using the generic glyph. This functionality
appears to have been inadvertently disabled by commit
68e13af301d5fcd76e884ecafcc88c30270e6444.

In the karyotype display, highlight features in a dark blue color to increase
contrast.
removing CGI::Pretty (performance) and Carp fatalsToBrowser (security)
Merge pull request #46 from nathanweeks/issue/karyotype-feature-highlighting

Improve feature visibility in karyotype display
Merge pull request #45 from nathanweeks/issue/regionsearch-features-same-location

Search results return only one feature with the same type, start, and end
Merge pull request #43 from nathanweeks/issue/blat-fix-sort-start-strand

BLAT plugin fixes
Merge pull request #32 from keiranmraine/master

Makes pre-loading of datasources under fastcgi a configurable option