Extract the global coverage runner and configurable saveCoverage.tmpl path

[ali-bugdayci]

1) Extract the global coverage runner incase it needs to be run manually, like:

if (typeof runCoverageGlobal !== "undefined")
  runCoverageGlobal();

This is necessary before calling browser.refresh() or if there is any normal form posts to server.

2) Make the template file path configurable from the Gruntfile. Currently it looks at specific path: "resources/saveCoverage.tmpl"

[r3b]

Looks good to me. Thanks for the contribution and apologies for the slow response.