Design: Type to Confirm Deletion Modal

[jniles]

This issue suggests a mocked-up design for #150. I propose it is implemented as soon as possible.

This modal will replace most instances of $window.confirm() in the application. It will be required to delete projects, accounts, debtor groups, cashboxes, and more. Deletion can still fail if the entity is used.

Interface (Cashbox Example)
The default interface should look like this:

Fig 1: Incomplete Text

Once the user enters the exact text, the submit button will be enabled, as shown below.

Fig 2: Complete Text

For further information (motivation, discussion of code design), see #150.

@sfount could you suggest improvements to this issue and assign it to a developer?

[jniles]

Closed by @mbayopanda's work on type-to-delete modals.