Fix link bugs and add style improvements.

[zpChris]

List of Changes:

• Update the "Create a problem" link on the "Verified Problems" page to the correct url: /problem/create.
• Update problem to only be set initially once.
• Update Back button to return to previous page only if one exists on the same site; otherwise, go to the dashboard.
• Restrict the problem description line length to one line.

Notes:

• The problem must be set only initially once because every time it is set, a new id is given for each test case; this means that the JSON.stringify check on the Back button will sometimes return that the problem was updated, even when it was not.
• I found the Back button "POP" check at this Stack Overflow post.
• An explanation / demonstration of the line length clamp is shown at this screencast (albeit on another page, but still relevant).

Screencast and Images:

Screencast of the Fix Link Bugs and Update Site Design

Update Description Length on Verified Problems
This image just shows one small portion of the PR.

[zpChris]

Fix link bugs and add style improvements

[alankbi]

Looks good to me! Left one comment about potentially reusing the line camp component (nice find btw 🙂), but otherwise should be good to merge whenever ready

[alankbi]

Also, lmk if you planned on setting the min-width on this or another PR and I can take a look at that as well (it's a small change though so prob would be fine with just merging that without additional review)

[zpChris]

Also, lmk if you planned on setting the min-width on this or another PR and I can take a look at that as well (it's a small change though so prob would be fine with just merging that without additional review)

I'll likely do this on another PR with a list of other small changes 👍