Are style="" blocks needed on ServiceGroup pages?

[gregcorbett]

style="" is used to a limited extent in the codebase - seemingly limited to pages around ServiceGroups.

A grep of the 5.10.4 codebase gave

> grep -RHn "style=\"\"" *
htdocs/web_portal/views/service_group/add_service_group.php:25:              <span class="input_name" style="">
htdocs/web_portal/views/service_group/add_new_se_to_service_group.php:90:    <span class="input_name" style="">

And #209 introduced some others, following the precedent.

We should determine the effect of removing style="" from the codebase and do it in one go if that's determined to be the best thing.

Otherwise, we should add comments why the empty style blocks are needed.