RESOLVED - issue BC-1863 #resolve for 5.3.x Gunakan getThreadAllocatedBytes() untuk profiling pemakaian heap 
https://idbippo.atlassian.net/browse/BC-1863
Merge branch '2.1.x'

Conflicts:
	site/src/main/java/org/soluvas/web/site/metrics/ThreadMetricsFilter.java