Ability to mute dialogs by muting object (or object owner)

With Avatar A 1) Rezz a cube and drop in the attached Dialog.lsl file 2) Click on the cube – note that a dialog message appears. 3) Clear the dialog message 4) Right click on the cube and pick Manage->Block – note that the object appears in the sidepanel block list that pops out. 5) Click on the cube – note that no dialog message is displayed. 6) Type in the chat bar – note that you have not muted yourself. 7) Unblock the object using the button in the sidebar With avatar B 1) Click on the cube – note that a dialog message appears. 2) Clear the dialog message. 3) Right click on the cube and pick Manage->Block 4) Click on the cube – note that no dialog message appears. 5) Unblock the object using the button in the sidebar 6) Click on the sidebar button Block person 7) Input Avatar A's name 8) Click on the cube – note that no dialog message appears. 9) Unblock Avatar A's name