DW Question & Answer Pro - WordPress Plugin 1.3.7

- Fix: Conflict Divi Builder
- Update: POT file languages

- New: Add option delay email.
- New: Speed Up system
- Fix: Search special char
- Fix: widget_title filter
- Fix: Button mark spam Akismet
- Fix: Update Evanto
- Fix: Conflict with Select2

- New: Mention user feature.
- New: Approve a pending question from front-end.
- Update js.
- Fix: Alert success style.
- Fix: Reset content after submitting the question.
- Fix: Email Forward.
- Fix: Notify answer.
- Fix: Responsive.