String issues

There are strings with mostly strange, sometimes wrong english (wrong string first, corrected next):

- The setting cannot be change because content already exists for this type
- The setting cannot be changed because content already exists for this type.

- You cannot change the status to %status for a reservation that has past.
- You cannot change the status to %status for a reservation that has passed.

- If the amount of items above isn't enough, click here to add more items.
- If the number of items above isn't enough, click here to add more items.

- Send Email Recepit
- Send Email Receipt

- Footer portion of printable contract. Normally includes signature lines. Allows HTML.
- Footer portion of printable contract. Normally includes signature lines. HTML allowed.

As I'm, on translating the module, further strings may follow.