Implemented timerange for mdplayer and use of it in widget Segment: if enable (option is use_timerange) when clicking a segment user can only read the video on current segment + adapted other widgets that need to detect segment to be able to use this option if it is enable so that segment detection is smoother + adjusted API testing form on iframetesting to use the correct api (form is still hidden by default)

@import "bootstrap/bootstrap";

@btn-font-weight: 300;
@font-family-sans-serif: "Roboto", Helvetica, Arial, sans-serif;

body, label, .checkbox label {
	font-weight: 300;
}