Merge pull request firebug#2 from deepak1556/robo/fix

Changes for compatibility with manifest V2

1st commit after converting from svn to git, svn structure is still i…

…n place

move firebug 1.5 files to the root, after migration from svn

firebug 1.4, cleaned up after svn-->git migration

firebug 1.4 flexBox, cleaned up after svn-->git migration

firebug1.3, cleaned up after svn-->git migration

firebug 1.2, cleaned up after svn-->git migration

firebug 1.1, cleaned up after svn-->git migration