[ticket/16913] Add Search Index Progress Bar with Stats
- Update SQL for count of posts
- Update search index test
- Removed "Pop-up Progress Bar".
- For first run display the "Success Message".
- Display the Info from "Pop-up Progress Bar" to "Success Message".
- Only display "Redirect" & "Rate" of post refreshed "Success Message".
- Minor Language Fix.
- Use `ORDER BY post_id ASC` for progress stats.
- Removed HTML from Lang String.
- Moved HTML to PHP file.
- Increased the size of Progress-Bar by 2x.
