Fixed an important typo in README.md and README.html

Finally finished a rough version of some admin pages that allow for
maintenance of the DB, fixing node locations, removing nodes, etc...
Username/Password is required to use the admin pages.
You must create an intial user/password.
When you first load the admin page it will ask you to create an initial
user.
This initial user is a "super user" and will be able to create other
users.
(more info is on the admin pages themselves)

Fixed a stupid mistake in export2csv.php.

Rearranged the columns in the node_info datebase which make the data
more readable when exported as CSV file.

Removed old DB columns that were now unused.

Changed the *.css-default file(s) to *-default.css so that IE will use
them without complaints.

More than a few other little changes here and there...

The check for internet access was using a POST variable to tell the page
if the client had access to the internet or not (it just tries to get
favicon.ico from google).
The problem with POST was that every time you refreshed the page, the
POST variable had to be resent, usually resulting in a dialog box from
the browser ("Do you want to resend this info?")

This drove me crazy, I could not stand that dialog box.

The check for internet access has been changed to use a cookie.
The cookie contains 1 item and expires after 30 minutes.
So after 30 minutes, the page will recheck for internet access and act
accordingly.

There is also a small change to the check for user-settings.ini.

The README.md/html files were slightly updated as well.

There is no longer a user-files.tar.gz file!

The user must remove the "-default" from the file extension, save the
file and then make their own changes. I have seen many other programs
use this and it seems to make sense.
The README has been updated to reflect this change.
Other ideas are appreciated still! :)

With the exception of user-settings.ini, the code will check for the
existance of the non "-default" files and use those instead of the
default ones.
Also if the user does not create a user-settings.ini file of their own
an error will be thrown telling them such.

Fixed the Popup for "total number of link" in the attributon bar.

Some new values were added to the meshmap.css file in order to make it
easier for the user to make customizations to the page if they want.
More of these will probably be added in the future.

"markdown" is a pain! I should have just written a webpage! :)

Updated to README.md file and made it much nicer. Logo updated in repo. favicon.ico added. Started the change to the -default files for the user editable files