CMS-3985 Wizard - Standard Error handling for FormItemSets

- Updated validation message
- Updated Long, Date, Time, GeoPoint valueBreaksRequiredContract methods
- moved string utils from api.util.methodName to api.util.StringHelper.methodName
Merge branch 'master' into cms-3985

Conflicts:
	modules/wem-admin-ui/src/main/resources/web/admin/common/js/form/inputtype/text/TextLine.ts
Merge pull request #949 from enonic/cms-3985

CMS-3985 Wizard - Standard Error handling for FormItemSets