Added CommunityPreviewComponent and Communities page

[yuchendong13]

Description

• contains a list of all the communities (create a communityPreview component)
• contains a searchbar to search all the communities
• contains a new community button

Related Issue

Solves Issue #33

Type of change

• [x] New feature (enhancement)

How Has This Been Tested?

• [x] Manual testing

Checklist:

• [x] Does a similar (open or closed) pull request not already exist?
• [x] Is the pull request head repository a fork repository?
• [x] Is the pull request compare branch a development branch?
• [x] Is the code documented, particularly in hard-to-understand areas?
• [x] Does the code build without new warnings?
• [x] Has testing been performed that proves changes are effective and work?
• [x] Has a self- and/or peer-review of the code been performed?
• [x] Have dependent changes been merged and published in downstream modules?
• [ ] Does all new and existing automated testing pass?
• [x] Is the person responsible for the repository assigned to the pull request?
• [x] Is the pull request linked to a project?
• [x] Is the pull request linked to a milestone?

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[christopher-alba]

Looks great, but just wondering if we should make the posts and communities pages a bit more consistent because right now the search bar that you have and the search bar that I did for the posts page are different. Also, I do not have the "based on search query..." text under the search bar. Should I also add it in the posts page? Posts page search bar:

Dont worry about the based on search query text its in one of my PRs :)

[yuchendong13]

Looks great, but just wondering if we should make the posts and communities pages a bit more consistent because right now the search bar that you have and the search bar that I did for the posts page are different. Also, I do not have the "based on search query..." text under the search bar. Should I also add it in the posts page? Posts page search bar:

Thanks for the feedback Trinh, I'll change the styling for the search bar to match your one in the posts page! I currently have it matching with the Navbar, but I do think it'll make more sense to match yours.

[yuchendong13]

Hi reviewers, could you please double-check the app.js - another PR overwrote my route to the communities page so I have created a separate route for 'CommunitiesPage' (not quite sure what the purpose of this is) and routed the old '/Communities' back to my communities page.