1.
CB Conditionals
is what you're looking for to conditionally show/hide based on field values -
e.g.: If field 'Species' = field value 'Alien' then show drop down select 'Select Planet'.
2. The editor options are in the tab management section of the profile book and include 'smilies on/off', 'bbcode on/off', 'title on/off' and others (as shown in the screen capture).
I believe you are confusing your two questions.
You don't need a conditional statement for showing 'Online Status' - just simply turn it off in the field management editor.
Components > Community Builder > Field Management > Online Status > Published/Unpublished