Introducing VoxxrinCrawler class
refactored mixit crawling by using VoxxrinCrawler
minor : refactored schedule local var to a currentContext's sortedSchedule
attribute, allowing to retrieve sortedSchedule from anywhere
Transforming voxxrin prez `fromTime` and `toTime` attributes
to Strings if this is not already the case
Considering same days as same dates in formatDates()
Changed voxxrinPres.room valorization, basing find
on schedule's new roomName attribute
Provided jugsummercamp crawler