Add Another School Modal Dialog

[Ghislain Hachey]

Moved from #83

8) Add Another?

This confirm() is just a placeholder - would be nicer to have a modal here - perhaps >invoked through a method of ApiUi.ts where the error reporting dialog are.

[Ghislain Hachey]

feat(EditController.ts): add dialog modal to prompt user for add new item

Closes #92

→ <<cset b1558bb158ff>>

[Ghislain Hachey]

feat(EditController.ts): add dialog modal to prompt user for add new item

Closes #92

→ <<cset 498663228cf5>>

[Ghislain Hachey]

feat(EditController.ts): add dialog modal to prompt user for add new item

Closes #92

→ <<cset b2db7f02d4b6>>

[Brian Lewis]

feat(EditController.ts): add dialog modal to prompt user for add new item

Closes #92

→ <<cset b2db7f02d4b6>>