Add working documents for next geneneration ADDIS DBMS
Update ADDIS SQL dbms working documents

Signed-off-by: Joël Kuiper <me@joelkuiper.eu>
Prepare for merge with main ADDIS repository
Merge remote-tracking branch 'addisDb/master' into develop

* addisDb/master:
  Prepare for merge with main ADDIS repository
  Remove converted file
  Add notes
  Add activities
  Started work on importing measurement_results
  Work in progress for conversion of ADDIS to SQL
  Minor updates
  Minor updates
  Transform ADDIS XML to SQL using XSLT stub
  Fix objectives and units
  Don't impose length on varchar
  Minor changes
  Add extra reference to variable_categories
  Add new SQL file for database structure
  Add previous work on dbms
  Initial commit
Merge work on DBMS for ADDIS into docs
Update documentation of DBMS layout
Escape quotes in SQL

- Add IF EXISTS for globals (we need a better solution for this) 
- Minor changes to indexes
Update database structure to prevent duplicate variables 

- Fix measurements
Add tools for automatic conversion and rebuild
Update documentation
Depend on JSMAA 1.0-ADDIS-1.16.3

- Add missing foreign keys to ADDIS 2.0 database
- Rename study_measurement_moments to measurement_moments
- Update documentation
Minor fixed to ADDIS DB 2.0

- Add missing foreign keys
- Add missing notes in transform
- Update documentation
Reduce directory depth
Merge branch 'develop' of github.com:drugis/trialverse into develop
Move DB schema and XSLT to dbms/
Merge ../addis-schema into develop
Add example data/XML from ADDIS
Merge branch 'develop' of github.com:drugis/trialverse into develop