Move http method from headline to detail map

And label headline filter in UI as 'Headline/URL'.

Also, change detail map keys to start with capital letters.
Change home chart border to match traces chart
Handle overall aggregate average when count is 0
Allow multiple values for trace attributes
More flexible error searching
Use relative URL so it will use base href
Fix jdbc get connection onThrow handler
Capture jdbc connection close
Capture jdbc connection setAutoCommit