Bug 32096: Consistent classes for primary buttons: Tools

Bug 32096: Consistent classes for primary buttons: Tools

This patch makes changes the button markup in various tool
templates so that all submit buttons and any buttons that should should
be styled as primary buttons have the Bootstrap class "btn btn-primary."

To test, apply the patch and view pages in the tools section to confirm
that everything looks correct. In most cases there are no visible
changes.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>