typo
Avoid consecutive / when concatonating the url parts together
Avoid undefined exception when $perlVarPopver has been cleared before the timer fires
Send params as encoded JSON instead of form params
Clicking on a line number toggles a breakpoint

The BreakpointManager is now responsible for everything breakpoint related.
Listening for click events and updating the display
wait to set up event handlers until after the Managers are created
getting Breakpoint/action includes href in the response
extract function to store a new breakpoint and update the display
add methods to get all breakpoints and actions
load all the current breakpoints at startup