add attr
Merge branch 'master' of https://github.com/ciudadanointeligente/vizard
Merge branch 'dev' of https://github.com/ciudadanointeligente/vizard into dev
resolve issue #43
fix issue #18
change name of External Step to Internal Step

and add events of inspector
remove unused code
add mesagge before close window
Merge branch 'dev' of https://github.com/ciudadanointeligente/vizard into dev
remove mysql2