Add concept of a search engine

bootstrap.php

include/ajax.tickets.php

include/class.dynamic_forms.php

include/class.faq.php

include/class.format.php

include/class.forms.php

include/class.organization.php

include/class.osticket.php

include/class.search.php

include/class.thread.php

include/class.ticket.php

include/class.user.php

include/mysqli.php

scp/tickets.php