Resolve "first visit"

Closes #180

See merge request NCER-PD/scheduling-system!110

when first appointment in first visit is finished then visit dates are adjusted to reflect start of the study

Resolve "exceeded vsit list"

Closes #179

See merge request NCER-PD/scheduling-system!109

notifications about visit time exceeded aren't show for the first visit without any appointment done

Resolve "approaching visits list"

Closes #173

See merge request NCER-PD/scheduling-system!108

Resolve "exceeded visits list & unfinished visits list"

Closes #146

See merge request NCER-PD/scheduling-system!107

there is possibility to define columsn that are not sortable

but no sorting filtering is possible

Resolve "Subjects without visit list"

Closes #176

See merge request NCER-PD/scheduling-system!106

Resolve "Subject required contact list"

Closes #177

See merge request NCER-PD/scheduling-system!105

Resolve "Notifications should be customized by study"

Closes #191

See merge request NCER-PD/scheduling-system!104

Resolve "subject should have social security number"

Closes #185

See merge request NCER-PD/scheduling-system!103