Placeholder Navigation Bar

Added a basic html list navigation bar, and corresponding css. Also
externalized some of the css in display.html into topology.css.
Move Slider & Add Tooltips

Moved slider to top right hand side and changed to vertical orientation
to make room for navigation bar.
Also removed node text labels and added names in tooltips instead.
Also changed a few constants so the nodes are not bouncing as much and
made circles scale correctly with slider.
Add Sliding Info Panel & Change Color Scheme

Added sliding panel on left side that shows detailed information about
clicked nodes. Based on original CSS by player-one at
http://stackoverflow.com/a/6161358.

Also changed color scheme to a much nicer looking one based on color
scheme of Ghost blog software.
MySQL Database Connection

Added functionality to read and insert into a MySQL database.

New Features:
Added MySQL Connector/J as a declared Maeven dependency.

Added MySqlAccess.java which uses Connector/J to access a local users
table.

Added DisplayServlet.java to process user information queries.

Added VersaStackUser.java to represent and store user information.

Added users.jsp to display the results of user table queries.

Added missing d3-tip library license file.

Updated:
Modified LoginServlet.java to process user signups.

Removed outdated styling in styles.css

Increased speed of side panel transitions in display.html

Changed index.html forms to look cleaner and fixed form submission
problems

Updated login.jsp to show which the action selected on login.
SHA Based Password Hashing

Added PasswordCryptoService.java which is a prototype password hashing
and authentication utility class.

Might replace later on with more secure crypt or script implementation.
Plain Text Password Authentication

Added basic password checking functionality

Modified:
MySQLAccess.java - add findUser(String email) to query for users based
on unique email

LoginServlet.java - add password checking and set attributes "success"
indicating whether action completed and "reason" indicating reason for
failure if any to be forwarded to asp

index.html - remove background color styling from body and add it to
styles.css

login.jsp - display the results of the login or user creation action,
if successful then redirect to display.html; also apply styles.css

users.jsp - apply styles.css
Merge branch 'login'