FREEPBX-1953 #QA #comment Fixed conferences to use new string validation scheme
FREEPBX-1953 #QA #comment Now uses global helper function module_get_field_size() instead
[Module Tag script: conferences 2.11.0.4]
Add feature code for combined BLF
Merge pull request #1 in FREEPBX/conferences from ~COVERUP0204/conferences:release/2.11 to release/2.11

* commit '4ad173fa7f3cfb1994afdb67439a36c0f85b1ceb':
  FREEPBX-1953 #QA #comment Now uses global helper function module_get_field_size() instead
  FREEPBX-1953 #QA #comment Fixed conferences to use new string validation scheme
FREEPBX-1953 - only check the display name if the function  module_get_field_size exists
Merge branch 'release/2.11'