compress allele structure booleans into one field
add point_mutation, conditional_point_mutation and allele_symbol_superscript to mi_plan table and model
add point mutation and conditional point mutation to microinjection list report
add point mutation fields to javascript widgets
override mi_attempt allele superscript with mi_plans override
Merge branch 'master' into change_mi_plans_report

Conflicts:
	app/models/targ_rep/es_cell.rb
	app/models/targ_rep/targeting_vector.rb
add tests to check mouse_allele_override