Allow about pages to reload and clone

[darkdh]

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).

fix #2826

Auditors: @bridiver, @bbondy

Test Plan:

1. Generate any error pages(connection error, cert error, ...)
2. Clone/Reload should work properly
3. Go to any about pages
4. Clone/Reload should work properly

[bbondy]

One bug still remains with this, if you turn your wifi off, and load a website to get the connection error page, then re-enable your wifi. Command+R will never work, but if you press the retry connection button it works.

[darkdh]

Thanks for pointing it out. The new squash commit will reload the original URL. For connection error page as an example, once you got network available and reload the error page by shortcut(cmd/control + r) or reload button will reload the original page.

[bbondy]

++ thanks