Filters added in public competitions page

[ihsaan-ullah]

Description

This PR has the following changes:

• add filters to the public competition page (search title --- order based on recent, popular, submissions --- show comps you are organizing or participating in)
• activate the concerned filters when you click Show more button for Recent or Popular benchmarks on the home page
• tests added for public competitions

Screenshots

Filter page

Error when user is not loggedin and tries to use participaitng in and organizing filters

Issues this PR resolves

• [Feature Request] Competition tags and filters #1895 -> Filters

Checklist

• Code review by me
• Hand tested by me
• I'm proud of my work
• Code review by reviewer
• Hand tested by reviewer
• CircleCi tests are passing
• Ready to merge

[Didayolo]

Great job @ihsaan-ullah, thank you very much! Some remarks.

Has reward filter

One more filter that is relevant, that I forgot to add when I updated the issue earlier, is "has reward". When you select it, only competitions with non-empty reward field would appear. What do you think? It was done on the draft PR #1825.

UI when no results

When there is no results to the filter:

• The pagination is "1 of 0"
• We could add a message like "No matching results."

Styling

Another remark, that is a detail, but the styling of the search bar and of the button "Clear All Filters" is not beautiful, not fitting the style of other buttons of the site.

It works fine

Outside of this UI remarks, the feature is working fine in terms of functionality. I'll continue the testing.

[ihsaan-ullah]

Updates

1. Style fixed
2. Reward added to filters
3. Tests updated
4. Empty response handled

Screenshots

[ihsaan-ullah]

Please don't forget to test if the filters work properly when you click view more button for recent/popular benchmarks on home page

[Didayolo]

This is great work, and you included deep testing