Revert "Disable payments panel tests too"; update names for tests to …

[bsclifton]

…make more grep-able (advanced vs regular)

This reverts commit 15e5628.

Auditors: @bbondy, @willy-b

Test plan

npm run test -- --grep="Regular payment panel tests"

[luixxiul]

https://travis-ci.org/brave/browser-laptop/jobs/213319342#L787

  1) Regular payment panel tests can setup payments "before each" hook for "shows welcome page":
     WaitUntilTimeoutError: Promise was rejected with the following reason: timeout
      at windowHandles() - brave.js:231:32
  2) Regular payment panel tests auto include site is added automatically:
     WaitUntilTimeoutError: element ([data-l10n-id="publisher"]) still not visible after 10000ms
      at isVisible("[data-l10n-id="publisher"]") - waitForVisible.js:37:22
  3) Regular payment panel tests auto include site is not added automatically:
     WaitUntilTimeoutError: element ([data-l10n-id="publisher"]) still not visible after 10000ms
      at isVisible("[data-l10n-id="publisher"]") - waitForVisible.js:37:22
  4) Regular payment panel tests auto include first site included, second site excluded:
     WaitUntilTimeoutError: element ([data-l10n-id="publisher"]) still not visible after 10000ms
      at isVisible("[data-l10n-id="publisher"]") - waitForVisible.js:37:22