Backport 5532 to 4.x#5877

Merged

epixa merged 20 commits intoelastic:4.xfrom stormpython:backport/5532

Feb 29, 2016

+30-14

Commits on Jan 11, 2016

init commit. Added inline controller to the visualize directive to exclude metric vis from showing no results. The metric vis should fall through to its own controller.
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Closes elastic#3682 . Adds ability for metric visualizations to return 0 or ? for empty sets where appropropriate.
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adding comments, adding ability for std deviation metric to return , and cleaning up code in the metric vis controller.
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adding comment
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Fixing issue with NaN and blank values being displayed. It turns out that null and NaN values can be returned and needed to be handled. I re-organized the code to handle null, undefined, and NaN va…
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switch from using isNaN to _.isNaN, and adding check for undefined values.
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updating pr based on @rashidkpc review
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moving business logic out of the view and removing early returns
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adding parameter to vis that tells the visualize directive whether the vis type handles no results.
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cleaning up code and moving handleNoResults param to defaults in metric vis
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refactoring
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removing early return
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removing comments
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refactoring based on @jbudz review
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reverting _.has back to _.get
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