SOS-1973 Activity sets with more than 3 entries are cutoff.
SOS-1974 Activities: The view more link does not work for activity sets.
LPS-42414 Do not hardcode the portlet id.
LPS-42414 Avoid magic numbers that are almost impossible to decode --> [14 = "_19_messageId=".lenght()]. Moreover, the id of the MB portlet in control panel is 162 so it doesn't work because it should be 15