Rename externalPlugin to apiPlugin
Rename bundle to app
Move js, css, menuItem and staticRoot to be properties os App
Add "app" field to panel, datasource and api plugin models. If populated
then the plugin is only enabled if the specific app is enabled for the Org.
If app is "", then the plugin is enabled for all orgs and can't be disabled.

This check ensures that all of the plugins required by a bundle
are loaded.

This includes support for cusom plugin config directives.

A plugnBundle is meta plugin that has a set of dependent plugins
to enable.  This commit includes a plugin.json for a default
"core" bundle that enables all of the shipped panels and datasources.

Conflicts:
	public/views/index.html

Conflicts:
	public/app/plugins/panels/table/editor.ts
	public/views/index.html

Merge branch 'fix_refresh_variable_from_url' of https://github.com/toni-moreno/grafana into toni-moreno-fix_refresh_variable_from_url

Add flag option to display app version (Issue 3374)

Updating forked copy from official Grafana master

Added currency units, time units, tests

Use of `<dimension name>` seems to confuse angular so changing to DIMENSION_NAME

Fixed #3357