Should be able to reset breakpoint from console

[mattzeunert]

• return resetBreakpoint function from debugPropertyGet, ..., debugCookieReads, ... (DONE)
• breakpoints.resetLastBreakpoint()
  • does this apply to all breakpoints or just to ones created in the console? => should be all
  • what happens when it's called several times? => older and older breakpoints are reset
  • => need to store creation date with each breakpoint so we can find the newest one to delete
  • If there's nothing to reset show message that there aren't any breakpoints
• breakpoints.resetAllBreakpoints() (DONE)

[mattzeunert]

Done