Offline Problems Resolution

When not connected to the internet the comment retrieval returns null,
which causes the array adapter to glitch out and cause a system wide
error that causes the application to halt unexpectedly.
Faster loading time for Feed

By delegating the list adapter to perform it's job of linking the
comments from the API to an Asynchonous task, the load time of the
comments page is much faster. Before this was done async, the load time
to generate the view for the page was on the order of 3-5 seconds
depending on the connection of the internet. The API call performs it's
task asynchronously and therefore is not the problem. Thus leading me to
conclude that the list adapter itself, and its corresponding view
rendering was the slow problem. By imperative results of the feed page
now loading within 1 second of clicking, I can semi-confidently say that
the problem was indeed where I suspected it was.
Fix NPE for Timestamp parsing

If a Comment is made programatically, or does not have a timestamp set.
The timestamp parsing will fail miserably due to a null pointer.

To correct this we have to check the timestamp whenever we try to grab
it from the comment's .getTimeStamp() function. We check it in code, but
it may also be a good idea to verify the values of the various keys when
creating the json in the API connector.

@primehunter326 what do you think about validating the input from during
your JSON parsing to avoid null pointers? Should we put in default
values or should we allow the NPE's to surface and deal with them during
runtime? It makes sense to me to place default values since it will
avoid system crashes, however we might also get funky behavior depending
on the default value. A good default value for the timestamp if one is
not supplied could be the current time. Which is possible through just
the new Date(). To put it into the format the view rendering will
expect, you can use:
 new SimpleDateFormat("E LLL d kk:mm:ss yyyy",Locale.US);
And I'm expecting it to be GMT time when I'm rendering it (I convert it
to EST)