remove default value on text field (mysql objects otherwise)
Merge branch 'master' of https://github.com/mpi2/PhenotypeArchive

# By ckchen-ebi
# Via ckchen-ebi
* 'master' of https://github.com/mpi2/PhenotypeArchive:
  updated to pick up mp/ma fields from images
  applied p_value 0.0001 in tagging mps for isPostQc/isPreQc/isLegacy