feat: make basics.summary optional

[xiaohanyu]

Description

Basics section is a special section while the most of data are required by default. Originally we would render Summary section for basics.summary field even if basics.summary is empty. Some people do not like this and wish to hide Summary section.

As a basic workaround, we want to hide the whole Summary section if basics.summary field is empty.

[Optional] Possible Solutions

NA

Acceptance Criteria

• do not render Summary section in PDF if basics.summary is empty.

Todo list

NA

[xiaohanyu]

Done, preview:

Just delete all content in basics.summary field and it will not show Summary section any more in the generated PDF.