Likes: Fixes issues where likes don't load.

- Moved the scripts to the bottom and the style to the top.
- Makes sure that the likes work as expected by making sure that the
master iframe is loaded after scripts are loaded.
props @zinigor for contributions to this PR.
General: Updates site_icon_id, site_icon_url and main_network_site

So that they are prefixed with jetpack_
General: Allow Jetpack Manage Notice

- Added 2 banners.
- Notice on the Dashboard asking the user to opt in
This notice can be dismissed
- Second notice on the Jetpack and Jetpack Setting Screen
 User can’t dismiss the notice only with a filter.
- When the user opts in option gets activated + JSON API needs to get
activated.
- Still need to work on changing the wording.
- Update so that after the user connects we update the setting to JSON
API.
Adds missing post restore endpoint in v1.1
manage-banner: initial style changes (breaking stuff)
General: Updated with suggestions from George

- Using option ’dismissed_manage_banner’  instead of
dismissed_jetpack_manage_banner
- use esc_attr_e instead  of _e
- moved the html out of translation string
- Use add_query_attr()
- Update to use Jetpack::admin_url()
- removed sprintf() when not needed.
- removed some debug code.
manage-banners: updated styles (still busted :D )
Wording updates to first banner.
manage-banner: many class changes
Merge branch 'manage-banner' of https://github.com/Automattic/jetpack into manage-banner

Conflicts:
	class.jetpack.php
Merge pull request #1395 from Automattic/add/restore-post-v1-1

Adds missing post restore endpoint in v1.1 props @rralian.
General: Wording changes to outing banner and the success message.

props @csonnek
General: Minor quotes fix
Merge pull request #1331 from Automattic/likes/fix-script-queue

Likes: Moved the call to enqueue_scripts into the action body making sure that scripts get loaded and that the master iframe is created after the scripts get added to the page.  props @zinigor
Likes: Added Portfolio Project check to make settings work properly

The Project Likes checkbox in the sharing settings did not have
any effect because the post's custom type was never checked.
Likes: updated the code to accept arbitrary CPTs

This allows enabling and disabling likes for any custom post
type, not only Portfolio Projects as done previously.
Merge pull request #1389 from Automattic/fix/options_variables

General: Updates site_icon_id, site_icon_url and main_network_site to be prefixed with jetpack_
Sync: Tell .com info about if this site is a multi_network

Knowing whether a site is part of a multi site network will let us
determine if we should be allowing user to update the site info or not.
General: forgot a comma
Merge pull request #1400 from zinigor/likes/cpt-setting-fix

Likes: Added Portfolio Project check to make settings work properly, props @zinigor. Fixes #1361