Added support for xep_pool process type with tests
Added xep_pool process code
Fixed bug in ProcessTree checking well ancestors and added further tests
Merge branch 'devel' into xep_pool
Further work on xep_pool process, including tests.

Added required functionality to ProcessTree.pm and tests.
Added input well validation to xep_pool process
Removed deprecated method from GenotypingQC.pm
Corrected implementation of addition of recombinase to the clone pick process
Added tests for clone_pick with recombinase
Added optional recombinase to 1st and 2nd electroporation processes, with tests
Corrected parameter validation in CreateProcess
Corrected grammar in comment on plate creation
Merge branch 'devel' into andrew_reports