update qiime-dev conf to use GG 13_8

This made it into 1.8.0 conf but not latest dev conf
Merge pull request #93 from jrrideout/gg13_8

update qiime-dev conf to use GG 13_8
Add --without-x option to R target

Fixes #95.
Merge pull request #96 from jrrideout/issue-95

Add --without-x option to R target
remove python targets and unnecessary R targets

Fixes https://github.com/qiime/qiime-deploy/issues/55 and #97.
Hotfix for QIIME_CONFIG_FP env var

This variable is being set twice by qiime-deploy after https://github.com/qiime/qiime-deploy/pull/56 was merged. New strategy is to have qiime-deploy set the env var.
Merge pull request #100 from jrrideout/qiime-config-fp-fix

Hotfix for QIIME_CONFIG_FP env var
Merge branch 'master' into qiime-deploy-issue-55

Conflicts:
	qiime-dev/qiime.conf
Merge pull request #99 from jrrideout/qiime-deploy-issue-55

remove python targets and unnecessary R targets
updated to point to new git location
updated to point to new download location
updated old url to new release location
Merge pull request #102 from gregcaporaso/pynast-port

updated to reflect pynast's move to the biocore organization
remove old QIIME configs

Now that we only officially support the latest and previous QIIME releases, we can get rid of these older configs. I'm pretty sure many of the dependencies didn't work anyways because we haven't always been updating those links.
Merge pull request #103 from jrrideout/rm-old-confs

remove old QIIME configs
remove pycogent
Merge pull request #104 from ElBrogrammer/remove-cogent

remove pycogent
Remove picrust conf files

Now that picrust is tested via travis-ci, we don't need these anymore.
Merge pull request #106 from ElBrogrammer/remove-picrust

Remove picrust conf files
Fix pplacer and SQLAlchemy links

Fixes #101 #105.