Merge branch 'master' into develop

* master:
Merge branch 'develop' of https://github.com/gertvv/addis into develop

* 'develop' of https://github.com/gertvv/addis:
  Automated changes for 1.16.1
  Version to 1.16.1, update README
Version to 1.16.2-SNAPSHOT
Fix #606: handling of N/As in forest plot

 * Also add unit tests
 * Refactor some older test code, move factory code to ExampleData
Fixed #607

Do not getDistribution() to determine AxisType, as the relative effect may
be N/A, but the AxisType still needs to be defined.
Fix #612: use axis-appropriate neutral value

BRATDifferenceRenderer did not check the AxisType before comparing point estimates to the neutral value (which it assumed to always be 1).
Refactor: use AxisType.neutralValue everywhere
Depend on GeMTC 0.14.2
Version to 1.16.2
1.16.2 automated changes
Version to 1.16.3-SNAPSHOT
Initial commit
Add previous work on dbms
Merge branch 'develop' of https://github.com/gertvv/addis into develop

* 'develop' of https://github.com/gertvv/addis:
  Version to 1.16.3-SNAPSHOT
  1.16.2 automated changes
  Version to 1.16.2
  Depend on GeMTC 0.14.2
  Refactor: use AxisType.neutralValue everywhere
  Fix #612: use axis-appropriate neutral value
  Fixed #607
  Fix #606: handling of N/As in forest plot
  Version to 1.16.2-SNAPSHOT
Fixed #613 Importing from ClinicalTrials sometimes crashes

And also disable the checkbox to import results when appropriate 
Add new SQL file for database structure
Add extra reference to variable_categories

Otherwise they make little sense, but I am also a bit unsure about this approach
Minor changes
Don't impose length on varchar
Depend on 1.0-ADDIS-1.16.3