fix #16: only first occurrence of a match group parameter is replaced
Increase FcgidMaxRequestLen to 128MB to allow larger file uploads under
FastCGI with mod_fcgid.

The "Using GBrowse 2.0 to visualize and share next-generation sequence
data" paper by Lincoln Stein states "In cases when the file is more than
100 MB in size, GBrowse users are encouraged to use the software's
remote BAM feature." 128MB was chosen because it is the next power of 2
larger than 100MB.
Clicking on the "Go" button when an annotation plugin is selected now turns on the corresponding track.
Merge commit '7f3e4103398b9a1d60e6a9cb86752fae949ac9ca'
Merge pull request #24 from tolot27/5bec27b43ccdc94537575f26dd93d5e49b14e5d1

fixes #16 (only first occurrence of a match group parameter is replaced)
Merge pull request #22 from nathanweeks/gbrowse_install

Increase FcgidMaxRequestLen to 128MB to allow larger file uploads under
require Bio::Graphics 2.34 to fix bug in SVG rendering
skip bam sort when sort flag header is sorted by coordinate
add bigBed support for user custom track uploads
update annotation help file for custom track uploads
add support for BigWigSet through custom track archive file uploads
add support for USeq files for custom track file uploads
added Juan Tena's split_wig.pl script, which is useful for uploading WIG files from genomes with lots of scaffolds.
Merge pull request #27 from tjparnell/new_upload_options

New upload options