Issue #63 (Use Firebug icons for Debugger panel)
https://github.com/firebug/firebug.next/issues/63

Part 1: Added debugging icons
Merge branch 'master' of local repository into issue63
Issue #63 (Use Firebug icons for Debugger panel)

https://github.com/firebug/firebug.next/issues/63

Part 2: Added enable/disable breakpoints icon
Issue #63 (Use Firebug icons for Debugger panel)

https://github.com/firebug/firebug.next/issues/63

Part 3: Added black box icon
Merge branch 'issue63'