MAINT: fixes #1723
MAINT: fixes #1671
Add pandas, gdata, burrito, and burrito-fillings info to print_qiime_config.py

Related to #1718 (still need to figure out burrito-fillings version info).
Merge branch 'master' into i-can-has-more-quick-fixes

Conflicts:
	ChangeLog.md
	setup.py
Display burrito-fillings version info if it becomes available

Fixes #1718
Merge pull request #1749 from jairideout/i-can-has-more-quick-fixes

More quick fixes