disable print_vars on sensors edit


git-svn-id: http://observium.org/svn/observer/trunk@4409 61d68cd4-352d-0410-923a-c4978735b2b8
reduce size of perf numbers


git-svn-id: http://observium.org/svn/observer/trunk@4410 61d68cd4-352d-0410-923a-c4978735b2b8