Do not graph MAX areas for intervals less then 48h.


git-svn-id: http://observium.org/svn/observer/trunk@4183 61d68cd4-352d-0410-923a-c4978735b2b8
Use integer values in legend for FDB.


git-svn-id: http://observium.org/svn/observer/trunk@4184 61d68cd4-352d-0410-923a-c4978735b2b8