Fixes bug which resulted in a server error when a codingvalue was emptied (see #67)
Merge remote-tracking branch 'origin/release-3.3' into release-3.3
Fixed bug causing rows to be wrongly copied (see #67)
Show warning message if a code was referenced in a Codebook-codingschemafield, but was not present in the associated codebook. Possibly closes #65.
Reverse order of generating message / altering data
Merge branch 'release-3.3'