add initial stuff for the module crm_claim_merge
the tests are now failing (but not errors)
merge data
merge history
merge of attachments
merge notify, change stage if needed
order of the fields is used when writing the message_post, so order them by interest (subjective)
fix merge of reference fields
merge followers
avoid some warnings
sort the claims so the oldest are the first to give their values
introspect the list of fields to merge rather than hardcoding them
merge FK pointing to crm_claim (o2m and m2m)
fix display of one2many fields in the summary message after the merge
completed tests with more types of fields (added date, selection, reference, m2o, char)
use name_get() when writing the subject of the merged messages
use name_get() in subject of summary so if it has been customized (eg. crm_claim_rma with a sequence), it will be displayed correctly
avoid collisions in attachment names
use the usual tree view for displaying claims in the wizard
useless copy