Added StudentDB & Student Login Code

Checks if Student exists in DB, if not then adds to db
allows only existing students to login
Student Interface HTML page
Cipher Toolbox

Ciphers for the Terminal Interface
Level 0 puzzles will use Caesar
Level 1 - Substitution
Level 2 - Transposition
Level 3 - Affine
Level 4 -Vigenere
Level 5 - RSA
Working and checked Lvls 1-3 Cipher Tools

Still need to do terminal interface and lvls 4-5
Working Lvls 1-5 Ciphers
Cipher update
Terminal Code