Refactor dashboard card classes to use 'content-card' instead of 'dashboard-card'

- Updated various views to replace 'dashboard-card' with 'content-card' for consistency in styling.
- Modified filter and table card classes across multiple pages including applications, campaigns, commands, datasets, dayparts, displays, display groups, display profiles, fonts, layouts, libraries, menu boards, modules, player software, playlists, resolutions, schedules, settings, sync groups, tags, tasks, templates, transitions, users, and user groups.

custom/otssignange/views/schedule-page.twig

@@ -35,10 +35,10 @@
             <p class="text-muted">{% trans "Schedule content to your displays." %}</p>
         </div>
 
-        <div class="widget dashboard-card ots-displays-card">
+        <div class="widget content-card ots-displays-card">
             <div class="widget-body ots-displays-body">
                 <div class="XiboGrid" id="{{ random() }}" data-grid-name="scheduleGridView">
-                    <div class="XiboFilter card mb-3 bg-light dashboard-card ots-filter-card">
+                    <div class="XiboFilter card mb-3 bg-light content-card ots-filter-card">
                         <div class="ots-filter-header">
                             <h3 class="ots-filter-title">{% trans "Filter Schedule" %}</h3>
                             <button type="button" class="ots-filter-toggle" id="ots-filter-collapse-btn" title="{% trans 'Toggle filter panel' %}">
@@ -196,7 +196,7 @@
                         </div>
                     </div>
                 
-                <div class="XiboSchedule card dashboard-card ots-table-card">
+                <div class="XiboSchedule card content-card ots-table-card">
                     <div class="ots-table-toolbar">
                         {% if currentUser.featureEnabled("schedule.add") %}
                             <button class="btn btn-sm btn-success ots-toolbar-btn XiboFormButton" title="{% trans "Add a new Scheduled event" %}" href="{{ url_for("schedule.add.form") }}"><i class="fa fa-plus" aria-hidden="true"></i></button>