Fixing UI Input Highlights on /top

User inputted highlights no longer "go wildcard" when they are
emptied for the first time. This is now fixed. Issue was caused
by using === in JavaScript, it was expecting null rather than ''
for the highlight, and the warning/critical were expecting 0 not ''.
Fixing UI Input Highlights on /top

User inputted highlights no longer "go wildcard" when they are
emptied for the first time. This is now fixed. Issue was caused
by using === in JavaScript, it was expecting null rather than ''
for the highlight, and the warning/critical were expecting 0 not ''.
Merge branch 'development' of https://github.com/NagiosEnterprises/ncpa into development