Stop executing initilization logic multiple times on comments page
requested to merge 1179-scroll-to-top-button-doesn-t-appear-after-switched-to-moderation into master
Only execute logic needed initially in AbstractCommentsPageComponent if no reload is performed.
Since the init function in AbstractCommentsPageComponent is used for loading the comment list, rename it to load and move only the initial logic to init.
Closes #1179 (closed)