Changes

tsk51: Enables theme links to redirect to explore.xhtml with correct
filtering
Updated theme tags in read.xhtml to use h:link pointing to 
explore.xhtml, passing the theme as a parameter. Adjusted main.css to 
remove the cursor restriction and add proper text decoration for links. 
Added f:metadata in explore.xhtml to capture the theme parameter and 
trigger the search action when a theme is provided, ensuring the page 
displays filtered results correctly.