Improve the "new topic" forum welcome template message

[netweb]

Via @ tobiasbg: ​https://wordpress.org/support/topic/forum-bugs-and-broken-things/page/3/?view=all#post-7721800

"Can we have the more detailed hints below the “Create New Topic” heading back? Right now, there’s only a short welcome notice and link, whereas the old forums had a list with a few items about what a good support question should contain."

The current "new topic" template:

Text:

Before posting a new topic, be sure to search to see if one has been started already.

Having a problem? Asking a question? Make sure to read the Forum Welcome to find out how to maximize your odds of getting help!

Code: (source)

<div class="bbp-template-notice">
  <p>Before posting a new topic, be sure to <a href="https://wordpress.org/support/search/">search</a> to see if one has been started already.</p>
  <p>Having a problem? Asking a question? Make sure to read the <a href="http://codex.wordpress.org/Forum_Welcome">Forum Welcome</a> to find out how to maximize your odds of getting help!</p>
</div>

[sterndata]

Rather than linking to a tl;dr document, can we just add one or two simple points?

"Please give us a link to your website." should be one.

[ocean90]

In 3941:

Forums Theme: Restore "Bug Reporting Tips".

See #110
Fixes #1961.

[netweb]

In 3947:

Forums Theme: "Bug Reporting Tips" spell check, note, not not.

See #1961.

[SergeyBiryukov]

meta-1961.patch​ removes an extra slash from Forum Welcome URL (props @fxbenard).

[SergeyBiryukov]

Fixed in [3950].