feat: new ErpEntityData trait

See merge request !123

This trait class is temporary, we may switch to interfaces later.
this trait class extends erp entities with getReferenceData().
this must be used wherever an erp is to be stored in extra data.

fix(UserData): behaviour of the control improved. process was not quite right

See merge request !122

fix: address 0

See merge request !121

fix(UserData): contact mail + contact person

See merge request !120

fix: rename Prozess to Vorgang

See merge request !119

related: pcsg/buero#416

related: pcsg/buero#419

related: pcsg/buero#427

Next 3.x

See merge request !118

Next 3.x

See merge request !117

Next 3.x

See merge request !116

feat: new ErpCopyInterface and erp entity copy dialog

See merge request !115

ERP entities can now say whether they can be copied. There is therefore a central copy dialogue.

fix: duplicate insert of a process

See merge request !114

fix: missing locale - process window button

See merge request !113

Next 3.x

See merge request !112

Next 3.x

See merge request !111

feat: smarty function {getPrefixedNumber}

See merge request !110

Example: {erpGetPrefixedNumber assign=prefixedNumber var=$erpUUID}