Remove unecessary OAuth connect files

Because this is a single-user application and all the necessary keys
are predefined, there's no need for additional user authentication.
I.e, connect.php and redirect.php (used to reset keys, etc. and open a
new connection) are unecessary.

As such, the files have been removed to a) simplify the connection
process and b) clean up the directory.

Note: Look into function of callback.php and whether or not it is
necessary to keep. test.php may be fit to remove as well.
Update jQuery version to 1.10.2
Re-open Twitter AJAX call

Now that TwitterOAuth is successfully connected, open previous Twitter
AJAX call for updating.

For better reading of runtime data, include console.logs of requests
made, etc. Add additional error-checking for data return (i.e, if data
is an array).

Note: PHP needs correction for AJAX to access Twitter OAuth connection.
Set session id + Save connection to session

In order for additional PHP files to make requests to Twitter without
opening an entirely new connection (e.g, includes requested via AJAX),
the initial connection must be stored somewhere. This is best handled
by session variables.

In order for other PHP files to access the same session, the session id
must be set at session_start(). Each PHP file that requires access to
this session must open with the same id (i.e, session_id() ).

Now that the session_id() is set and the OAuth connection is saved,
twitter.php can be updated.
Re-update jQuery

jQuery 1.10.2 throws an error when .map file is not included. File is
now added and error resolved.
Add comment to index: "Pull sample content…"

For readability, quick comment added to verify purpose of Twitter
request in index.php.

Note: This section of code will eventually be removed for production as
it is only sample code for the sake of testing.
Update Twitter AJAX error logging

The current console.log for the Twitter AJAX call combines string and
object data into a single statement. This statement does not show the
full object in the console.

In order to view the full data object, the console.log statement has
been split in two. This way it will show one line, "Error (Twitter)",
and in the following line full object notation.
Move TwitterOAuth from index.php to twitter.php

After testing, AJAX requests require that the TwitterOAuth connection
be re-opened for each request. As such, sessions are no longer required
for storing the connection and have been removed. Additionally, OAuth
is not required at the outset of the application (i.e, in index.php)
and has therefore also been removed.

OAuth is only required during AJAX requests (i.e, in twitter.php).
Thus, the original code from index.php has been adapted to twitter.php.

Parsing methods must now be updated to account for changes in the tweet
object.

Note: This update is only being made for the sake of *first* creating a
functional application and *then* optimizing afterwards. In regards to
optimization, re-establishing the OAuth connection for each AJAX
request is inefficient and ought to be simplified to the use of a
single, stored connection. The goal is simplicity (for the sake of
maintainability) and speed (for the sake of UX).
Note to add validation requirements to twitter.php

Currently, there is no validation to report errors or prevent attacks
in twitter.php. These ought to be added in the future - and soon!
Fix parsing for tweet object

Twitter API 1.1 re-organized the tweet object - mainly property names.
Names have been updated accordingly.

The JSON data returned by the AJAX request is an object, not an array,
so the check for isArray() has been removed.

Tweet composition has been made more readable by splitting up and
commenting the variable initialization.

Note: Validation ought to be added to all requests and includes files.
File structure ought to be re-organized as well (naming conventions,
directories, etc).
Complete update to Twitter API 1.1

In a previous commit, OAuth was said to be removed from index.php but
was not actually. index.php now only consists of an include for
html.inc.

Test code has also been removed from html.inc. HTML ough to be further
restructured for simplicity (in light of both JS and CSS).

Application is now successfully updated to Twitter API 1.1.