masks : base implementation
masks : use bauhaus widget inside iops
spot : fiw memory leak and avoid rounding error
masks : xmp fix + gui refinements
zoom percentage indicator
navigation : add a way to set canonicals zooms
zoom use ctrl+wheel to pass barriers

the user has to hit ctrl when scrolling to go
- under the "zoom-to-fit" level
- after the 1:1 level
bounds are 0.5*"zoom-to-fit" and 200%
colormapping: fix long standing bug of cluster weighting
colormapping: make clusters slider a bit less sensitive
updated pt_PT translation
profiled denoise: recognize all Canon names, both idiotic and not
Merge pull request #210 from jcrc/master

Update for pt_PT translation
noise profile: canon eos 1d iii by bo zhang
Merge branch 'masks3'