[i18n] Transifex filter issue:open

Could you please process the open issues on Transifex?

1. The filter issue:open list the issues.
   For example:
   a) "occured" should be "occurred"
   b) "happned" should be "happened"; even better would be "occurred"

2. The filter text:... lists the three consecutive dots (...) [3 characters] which can be replaced by an ellipsis (…) [1 character]

3. The filter text:! shows strings with an exclamation mark (!). In English, there should not be a space before an exclamation mark (!).

4. Is it possible to spell and grammar check the en source string?

What do you think?

Thank you