Added back button to answer box

Added a button for the answer box in index.php.
Made some minor styling changes to the css file.
Minor change to a function in startpage.js
Merge branch 'duggasys-feature-login-system-#93' of https://github.com/HGustavs/LenaSYS_2014 into duggasys-feature-login-system-#93

Conflicts:
	DuggaSys/css/duggasys.css
	DuggaSys/index.php