Incorrect RAM usage percentage is displayed on the WebUI

Servers tab part:

In the Servers tab, the memory representation value for Analytics is using cbas_heap_used, this value needs to be changed to be the sum of the following 2 stats (reported by ns_server):

sysproc_mem_resident{proc="cbas",category="system-processes"} 10784768

sysproc_mem_resident{proc="java",category="system-processes"} 905347072 

Dashboard part:

The sysproc_mem_resident{proc="java",category="system-processes"} (the one for java) needs to be reported in the Default Dashboard under the Analytics section.

The sysproc_mem_resident{proc="cbas",category="system-processes"} (the one for cbas) should be selectable in case the user wants to add it in a custom dashboard, but not available in the Default Dashboard.