Revert "Revert "Added ajax to send the email from the contact page as well the PHP code to actually send it.""

This reverts commit b93595b65ede85f5e09e542d780e60247569eb6b.
Revert "Revert "remove .php from links in navbar""

This reverts commit 62370767f0336961611899770157739d4f7702ac.
Revert "remove .php from links in navbar"

This reverts commit d0c2047e4331fadf7c4e6e00e82a5fa8b1c07562.