adding better alphanumeric search extended highlight to search block
adding better alphanumeric search extended highlight to search block

TimDix/concrete5,avdevs/concrete5,MichaelMaar/concrete5,MichaelMaar/concrete5,avdevs/concrete5,MichaelMaar/concrete5,matt9mg/concrete5,TimDix/concrete5,matt9mg/concrete5,avdevs/concrete5,matt9mg/concrete5,TimDix/concrete5