Fixed broken tests in test_format.py
Merge branch 'issue_5' into light_fixes
Add changes to support the presence of ellipses

The code to scale the coordinates was not considering the case where
ellipses are present in the scene.
Merge branch 'issue_5' into light_fixes
Fix sphere slider value when scaling coords

The value of the slider was not changed but the size of the spheres was
and when proceeding to modify the value with the slider, a glitch seemed
to appear.
Merge branch 'issue_5' into light_fixes
Fix sphere scaling issue with slider

A new variable was added to account for the size the sphere should have
if looking at scaled coordinates the value will be the percent explained
by PC1 fi looking at unscaled coordinates the value will be 1.
Fix scaling custom axes, to use PC1 instead of 1

Thanks for the hint @antgonza
Merge pull request #32 from ElDeveloper/issue_5

Issue 5 -- Scaling method
Merge branch 'master' of git://github.com/qiime/emperor into light_fixes