chrome denoise: add wavelet denoising core to profiled denoising module.

together with a switch between that and nlmeans.
wavelets seem to be a lot more effective against low frequency
color noise. i get very nice results using blend mode `color' for
wavelets along with a second instance using `lightness' blend mode
with nlmeans.

not sure we want to go that way, just using an additional chroma denoise
in the equalizer might work the same.
Update pt_BR tranlation
Merge branch 'chroma-denoise'
noise profile: merged wavelet mode, no opencl for now.
noise profile: d7100 by GomGom
noise profile: panasonic g3 by thouks
Merge pull request #146 from guitorri/translate_pt_BR

Update pt_BR tranlation by guitorri. Thanks
Create styles from lightable mode.

This may be handy and it avoid switching to darkroom just for this.
Fix style.
Display a message when trying to apply a style with no selection.
Merge branch 'create-style-from-lightable'

* create-style-from-lightable:
  Display a message when trying to apply a style with no selection.
  Fix style.
  Create styles from lightable mode.
Updated WB presets for Canon EOS 550D
Added all finetuning steps. Firmware Version 1.0.9
Minor code clean-up.
Merge pull request #149 from LebedevRI/canoneos550d-wb-presets-update

Updated WB presets for Canon EOS 550D
Read ISO from EXIF differently (similar to inside exiv2's "fixiso" setting), and hope this will be the correct way now (works for d5100 at least, please check that other ISO readouts are not broken now!)
Be a bit more regression safe:
handle standard ISO tags the same as before (however not sure if that was really correct?), and non-standard ones in the way exiv2's fixiso does
noise profile: some work on the wavelet code.

please still don't use it in production, i reserve the right to change this..
doesn't quite all add up yet, but results are decent again.

more rigorous evalution still to do.
gen-profile: Fix "Check for images export (...)" message
preferences dialog: adapted tool-tip for grayed out options
noise profile: pentax k-r by Enrico Hillmann