GH-989 rename goTo to initialPage in the configuration object
GH-989 removed width paramameter in the configuration object
GH-989 goTo documentation
GH-989 arrows parameter in configuration object and arrows method were removed
#989 Calendar: Update methods name. Refactor on nextYear, prevYear, prevMonth and nextMonth methods.
#987 Calendar: Update tests.
GH-987 GH-989 merge with @pazguille