Fixes uxsolutions#816

When selecting already selected day (and multidate: false), it toggles it off and clears the input field. This can be very confusing especially if using autoclose feature.

js/bootstrap-datepicker.js

@@ -1017,12 +1017,12 @@
 			if (!date){
 				this.dates.clear();
 			}
-			else if (ix !== -1){
-				this.dates.remove(ix);
-			}
-			else {
+			else if (ix == -1){
 				this.dates.push(date);
 			}
+			else if ((typeof this.o.multidate === 'number' && this.o.multidate > 1) || this.o.multidate === true){
+				this.dates.remove(ix);
+			}
 			if (typeof this.o.multidate === 'number')
 				while (this.dates.length > this.o.multidate)
 					this.dates.remove(0);