Add some sort of indicator that the title is editable

[karismatic-megafauna]

To the right of the title in this screenshot, add an icon indicating edit-ability:

maybe this one from the font awesome package we are using ->  fa-edit (alias) []

[mtrivera]

@michaelghinrichs I can work on this

[Beslinda]

I opened a PR for this issue: https://github.com/michaelghinrichs/school-working-days-calculator/pull/56

[karismatic-megafauna]

thanks @Beslinda :)