BUG: fixes #1768
BUG: fixes #1768
MAINT: removed debugging statement
MAINT: removed commented line of code
REL: added note on this fix
BUG: updated to call formatdb with absolute path to reference seqs
Merge branch 'master' of github.com:qiime/qiime into issue-1768

Conflicts:
	ChangeLog.md
MAINT: fixed typo
Merge pull request #1769 from gregcaporaso/issue-1768

fixes issue where multiple instances of blast taxonomy assigner would remove each other's databases
documentation addition

added a lot of help documentation to mimic group_significance.py.
Merge branch 'master' into correlations