Fixed crash problem if no current layer in save file
Resolve conflict
minor cleanup
comment debug log msg
Replace setting string by define constant
Remove ununsed code
Remove unused member
Basic Tool Manager is done
Merge pull request #212 from chchwy/feature/tool-manager

Feature/tool manager
Merge branch 'master' of https://github.com/eVoLuTiVeMEDIA/pencil