js: Add request to the server for sports

js: Fix indentation
css: Change colours
js: Back button on creators page

css: Text marking on creators page allowed
js: ext/jquery directory does not exist => removed from links
html: Add page for the project
js: Fix display of null email; css: About page change background
database.php: Add getClubSchedule

Add functions getClubScheduleTime and getClubSchedulePrice.
query.php: Set times and prices from schedule
Do not check for database name

This is to not make mistakes when debugging, not needed now.
Fix: Add sport correctly to array
Fix: Escape forward slashes in sports

Forward shash in sport name was breaking the regex.
Recently a sport with a forward slash in the name appeared in the input.
Add content in about and redo /ext/jquery/ revert

Change line ending from DOS to UNIX style.
Other small improvements.
Remove doctype html

For some reason doctype prevents the map from loading.