Update genome_annotation release notes to the latest (2/26/14)

Copy RELEASE_NOTES.txt from the genome_annotation repo
Update genome_annotation Perl api docs to latest release

Latest production release is 20140415-prod. Copied Built for this tag,
copied
/kb/deployment/services/genome_annotation/webroot/genomeanno_impl.html,
rename to genome_annotation.html, fun fix-perl-doc to generate files
for web site.