Issue#148:JSError when deleting first frame + preview speed accuracy
Added resize canvas panel
Fix : added missing Method on BaseSelect

- TODO : Review usage of hideHighlightedPixel in Tools
Merge branch 'feature-save-panel' of https://github.com/juliandescottes/piskel into feature-save-panel
Merge branch 'feature-save-panel' into feature-resize-panel
Merge pull request #152 from juliandescottes/feature-resize-panel

Feature resize panel