Make legend more detailed (specify delay ranges for each status)

 index.html

@@ -34,7 +34,10 @@
            .bg-active {
                background-color: #eee;
            }
            .label.bg-success, .label.bg-warning, .label.bg-danger, .label.bg-active {
            .bg-default {
                border: 1px solid #eee;
            }
            .label.bg-success, .label.bg-warning, .label.bg-danger, .label.bg-active, .label.bg-default {
                color: black;
                font-weight: normal;
                font-size: inherit;
@@ -126,10 +129,11 @@
                    
                    <p class="small">
                        Legend:
                        <span class="label bg-success">At stop</span>
                        <span class="label bg-warning">Slightly delayed</span>
                        <span class="label bg-danger">Heavily delayed</span>
                        <span class="label bg-active">Departed</span>
                        <span class="label bg-success">At stop</span>
                        <span class="label bg-default">En route</span>
                        <span class="label bg-warning">Delayed 4′+</span>
                        <span class="label bg-danger">Delayed 10′+</span>
                    </p>
                    
                    <p class="small">Relative times (eg. 3 min) are real-time arrivals based on tram location data. Absolute times (eg. 8:01) are scheduled departures, shown when the tram cannot be located. "?" means unknown delay.</p>