This commit changes the way the save and discard buttons on the
organization profile, settings and permissions tabs look and fades
them out after a delay. It also cleans up the code a bit in the
settings_org.js file. It introduces changes to the css in
settings.css as well as the template for save-discard buttons.
It also fixes a bug on the user settings whereby if an option
that requires reload is clicked before clicking an option that does
not require reload, the reload message is erased. This could create
an issue where the user is not aware that a reload is required.
The loader is also changed to using fa-icon as loading spinner on
user settings and the colors are tweaked a little bit.
This makes the standard checkboxes 7% darker and makes the disabled
ones about 12% darker + 7% darker than they were before, to
increase visibility.
Fixes: #6331.