version 1.2: Event dates

Dates for birth and dry-off events can go up to 2 years and 6 months
 back respectively

Signed-off-by: Jason Rogena <j.rogena@cgiar.org>
1.2.3: fix calving/birth ambiquity

Fix for Calving/birth ambiguity in AddEventActivity

Signed-off-by: Jason Rogena <j.rogena@cgiar.org>