Refactor UI elements for consistency and clarity

- Updated action buttons across multiple files to use icons (e.g., "Save" to "💾+", "Delete" to "X").
- Replaced "Cancel" button text with a left arrow (←) for a more intuitive navigation experience.
- Removed unnecessary action columns from tables to streamline the interface.
- Enhanced table rows to be clickable for better user interaction, redirecting to relevant management pages.
- Adjusted font sizes and styles in CSS for improved readability and aesthetics.
- Standardized back button functionality to use a left arrow across various pages.

cartests.php

@@ -122,7 +122,6 @@ $view .= '
                     <th>'.$cartest_carbrand.'</th>
                     <th>'.$cartest_cartype.'</th>
                     <th>'.$general_createdby.'</th>
-                    <th>'.$general_actions.'</th>
                 </tr>
             </thead>
             <tbody>
@@ -138,12 +137,11 @@ $view .= '
             else {
                 foreach ($responses as $response){
                 $view .= ' 
-                    <tr>
+                    <tr onclick="window.location.href=\'index.php?page=cartest&rowID='.$response->rowID.'\'" style="cursor: pointer;">
                     <td class="responsive-hidden">'.$response->rowID.'</td>
                     <td>'.$response->carbrand.'</td>
                     <td>'.$response->cartype.'</td>
                     <td>'.$response->createdby.'</td>
-                    <td><a href="index.php?page=cartest&rowID='.$response->rowID.'" class="btn_link">'.$general_view.'</a></td>
                 </tr>
                 ';
                 }