Fix issue with image loading

Updating the API to the new NASA APOD API

very new tab becomes NASA's Astronomy Picture of the Day — a real photograph of
the universe, with the story behind it.

Since 1995, NASA has published one astronomy image every day, each written up by
a professional astronomer. That's thousands of pictures: nebulae, galaxies, solar
eclipses, aurorae, rovers, comets and deep field surveys. This extension puts
them on the page you already open a hundred times a day.

Your top sites stay in the top left, so the new tab keeps the usefulness of the
default one.

BROWSE THIRTY YEARS OF ARCHIVE

• See today's picture, or open on a random one from the entire archive.
• Show today's image a set number of times before switching to random — set the
  count in the options, and it resets each day.
• Click the date in the title bar to jump to any day back to June 16, 1995.
• Step through the archive a day at a time, forward or back.

KEEP WHAT YOU LIKE

• Save any image to Favorites and search back through them by title.
• Every image you view is kept in a searchable history.
• Move through images you have already seen with the Left and Right arrow keys.
• Download the full-resolution image to your computer.

BUILT FOR THE KEYBOARD

Navigation:
* Random APOD — 'r'
* Today's APOD — 't'
* Previous day — 'j'
* Next day — 'k'

Panels:
* Explanation — 'e'
* Favorites — 'f'
* History — 'h'
* Close panel — 'esc'

OPTIONS

• Open on today's picture or a random one.
• Force full-resolution images, or let the standard image load when the HD file
  is taking too long.
• Show or hide your top sites.
• Set how many times today's image appears before random ones take over.

PERMISSIONS

• topSites — draws your most-visited shortcuts in the top left. Toggle it off in
  the options and they are not shown.
• storage — saves your settings, favorites and viewing history on your own
  machine.
• favicon — draws the shortcut icons from Chrome's local favicon cache, so your
  browsing data never leaves your computer.
• downloads — optional, and only requested the first time you click Download.
• api.nasa.gov — the only site this extension talks to, to fetch the daily image.

No analytics, no tracking, no account.

* Fixed API issue where images couldn't be found.

Using a new API for data and added a history row of images at bottom of page (toggle this row in the options menubar item).

Removed all Google analytics tracking.

Google analytics tracking has been completely removed.