Show less functionality added to optimize the click flow

[saganshul]

This PR is small optimization in reference to issue #429.

Description

Added a show less button at bottom, on clicking it Plugin gets collapse and auto scroll smoothly to plugin next to it. This will decrease a lot of vertical scrolling.

Related Issue

#429

Motivation and Context

This will decrease a lot of vertical scrolling.

Reviewers

@delta24 @7a @DePierre

How Has This Been Tested?

This was tested on Firefox and Chromium and works as very well on both browsers.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Other

Checklist:

• My code follows the code style (modified PEP8) of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[viyatb]

@saganshul Right now on clicking the accordion element, the previous accordion automatically collapses to show the next one. How does this decrease vertical scrolling?

[saganshul]

@delta24, suppose I do not want to review next plugin so to collapse the detailed plugin, I have to back scroll to plugin and click it. Hence now if there is "show less" at bottom of expanded plugin. User can just click and can collapse plugin.

[viyatb]

@saganshul Then IMO a more apt name for "Show less" would be "Close plugin" or "Collapse" or something like that.

[saganshul]

@delta24 correct, I will change the name and update the PR.

[saganshul]

@delta24 done .Please review