client/general: add empty href for link buttons

In e464e69 I removed href='#' but I noticed that it broke some things.
Readding href serves two purposes:

- it makes links reachable with Tab key
- it makes links clickable with Enter key

The alternative to this approach was to introduce [tabindex] and [role]
attributes. But not only using tabindex=0 with <a/> is questionable,
it'd require adding a keyboard handler that'd intercept space and return
key presses and simulated link clicks. Since it's best to leave this
kind of thing to the native UI, I went with readding hrefs instead. I
believe that hash hrefs, even though being a common practice, are silly,
so I decided to settle down with empty hrefs.

As a bonus, I added a snippet that prevents middle mouse clicks from
opening such links/buttons in new tabs, which was the motivation for
e464e69.

1 files changed, 1 insertions, 1 deletions

diff --git a/client/html/expander.tpl b/client/html/expander.tpl
index 39014d1..abfd73e 100644
--- a/client/html/expander.tpl
+++ b/client/html/expander.tpl
@@ -1,6 +1,6 @@
 <section class='expander'>
     <header>
-        <a>
+        <a href>
             <%- ctx.title %>
             <i class='fa fa-chevron-down'></i>
         </a>