GitLab

remove redundant redux actions from components, added validation patterns / enable form validation in application.form.main component, updated sector.courses component

added Sectors entity, updated Course entity, added Sectors form, added SectorCourses form, added ApplicationPreview form

Reworked application.form.main to comply with Reactive forms standards and Redux patterns. Connected course.fields.select form with application.form.main. Other fixes and restructuring