Patch test_classhelper.py and classhelper.css after commit 7de6f75c47 changed markers used by testing/css

[rouilj]

Commit 7de6f75 to remove checkboxes when the classhelper is used in read-only mode also changed:

From	To
.acc-apply	.popup-apply
.rowstyle	.row-style

This had a couple of effects downstream. The css that made the apply button bold needed to be changed from .acc-apply. Also the test_classhelper.py made extensive use of both acc-apply and rowstyle in locating the elements it wanted to interact with.

I assume these changes snuck (sneaked) into the commit by accident probably as part of another cleanup that
would have included the tests and css.

The diff/patch is attached. I also extracted the testing URL to a variable as I was testing against the real
name of my server at home rather than localhost.

test_and_css_patches.patch.txt

[rouilj]

I forgot to mention that the classhelper data-search-with for superseder got change and replaced status[] with status. This also broke a test as it was looking for a select input not a text input. So I needed to change
that in issue.item.html.

[malvpatel]

PR - #60

I will test this in windows and do a merge

[malvpatel]

I have tested it in linux and windows, testing suit works on both.

PR - #60 updated the main branch