If the `cur_frm.toolbar.current_status` is not unset, when, `cur_frm.toolbar.enable_save` is called the `Save` button on form is not reloaded!

To certify just go to a form, open the browser console and run

```
cur_frm.disable_save();
cur_frm.enable_save();
```

Without this fix, the button will not released!

[cleanup] simpler logging system that does not affect other loggers

Blog UI changes and Clean up

Added validation for App Title

Added data-link to issues tab under navbar

Build columns only if field exists

Website makeover

[enhancement] SendGrid Integration app added to app listing

Problem on ‘Created On’/'Last Updated On' filter

Added Let's Encrypt doc

Added Bench Documentation