Fix 404 error of theme file (due to AngularJS not being loaded yet).

This fixes a 404 error that happens when the application is first loaded and
the browser tries to fetch the file "/dist/{{getTheme()}}_style.css" without
interpolating the `getTheme()` function, since AngularJS is not loaded yet.
Merge pull request #197 from deborasetton/issue/theme-load-error

Fix 404 error of theme file (due to AngularJS not being loaded yet).
Fix 404 error of angular-route source map.
Merge pull request #198 from deborasetton/issue/sourcemap-load-error

Fix 404 error of angular-route source map.
removed node shutdown icon
redesign cluster overview

remove unassigned/initializing shards from cluster stats into node x index table.

pagination was also improved
use wildcards in grunt definitions
created pagination directive

not applied to percolator since pagination is slightly different there
handles loading views when cluster is not yet loaded