Updated floats to decimals

Updated floats to decimals and added start_date and japanesename to the
schema
Added anniversary milestone

Added anniversary milestone check to the batch attendance
Added isAnniversaryMilestone function

Added the isAnniversaryMilestone function to the classProgress object.
Updated certificate template image
Updated student management module

Added the start_date field but also fixed some small bugs. Got the
validation working properly as well.
Updated scClassEnrollmentCreate processor

When a student gets enrolled the classProgress record is also created
at the same time for that student.