Metric chart view does not crash entire page if canvas element is not
rendered (objective has no metric)
Adding an objective automatically focuses on editing the objective title

Also moved JS files to use standard underscore instead of dash in
filenames
Merge pull request #10 from unepwcmc/add-objective-button-focuses-on-objective-title-when-clicked-by-user-of-website

Add objective button focuses on objective title when clicked by user of website