IntelliJ project files
IntelliJ project files: disable OSGi detection
Fix #1987 "PDF template: non-boolean checkboxes don't work"

- this has probably been broken for a long time
- selection controls produce `export-value` mappings
- PDFTemplateProcessor consumes `export-value` mappings
- also prevent mapping of acrobat field names with `$null`
Fix #1955 "PDF template: fr:number is always blank"

- also fix fr:currency