[4.0] Dashboard module options button (joomla#27529)

I have no idea why but this cog icon button was given a class of btn-link. This meant that there was no visible indicator of focus. Removal of that class now means that you can visibly tab around the dashboard and see where you are

administrator/templates/atum/html/layouts/chromes/body.php

@@ -40,7 +40,7 @@
 			<?php if ($canEdit || $canChange) : ?>
 				<?php $dropdownPosition = Factory::getLanguage()->isRTL() ? 'left' : 'right'; ?>
 				<div class="module-actions dropdown">
-					<button type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" class="btn btn-link" id="dropdownMenuButton-<?php echo $id; ?>">
+					<button type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" class="btn" id="dropdownMenuButton-<?php echo $id; ?>">
 						<span class="fa fa-cog" aria-hidden="true"></span>
 						<span class="sr-only"><?php echo Text::sprintf('JACTION_EDIT_MODULE', $module->title); ?></span>
 					</button>

administrator/templates/atum/html/layouts/chromes/well.php

@@ -52,7 +52,7 @@
 					<?php if ($canEdit || $canChange) : ?>
 						<?php $dropdownPosition = Factory::getLanguage()->isRTL() ? 'left' : 'right'; ?>
 						<div class="module-actions dropdown">
-							<button type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" class="btn btn-link" id="dropdownMenuButton-<?php echo $id; ?>">
+							<button type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" class="btn" id="dropdownMenuButton-<?php echo $id; ?>">
 								<span class="fa fa-cog" aria-hidden="true"></span>
 								<span class="sr-only"><?php echo Text::sprintf('JACTION_EDIT_MODULE', $module->title); ?></span>
 							</button>