Italian translation updated
Update French translation.
cleanup: don't touch gui stuff when in cli mode
[l10n] Swedish correction, a case where "import" is a noun rather than a verb.
Merge pull request #461 from bartokk/master

Italian translation updated
use LibRaw 0.16.0

LibRaw >= 1.15.0 no longer allows document_mode for grayscale
uninterpolated data, hence now directly reading raw data buffer.

QUESTIONS:
- does this produce different data than document_mode did?
- do need to set so many params for LibRaw if not calling
  libraw_dcraw_process() and libraw_dcraw_make_mem_image()?
record x-trans sensor's filter array

right now the only way to identify if the image is x-trans mosaiced is
to check for a dcraw-specific magic # 9 in filters

QUESTION:
- is there a better way to id non-bayer filter, such as a flag, or
  xtrans[0][0] == -1 means bayer?
demosaic x-trans initial try -- via linear interpolation

PROBLEMS/TODO:
- wrong at 1:1 view
- should use floats in interp. routine the whole way
- should use use x-trans interp. for all cases in process
- should use dcraw >= 9.19 demosaic algorithm
first pass at fast clip/zoom x-trans mosaiced image

quick copy of exisitng dt_iop_clip_and_zoom_demosaic_half_size,
presumably is wrong math, has buffer overflows, could be radically
improved, etc.
stub for x-trans in dt_image_flipped_filter

at least don't lose the x-trans magic '9' from dcraw
TODO: actually rotate the x-trans filter
misc. cleanups for linear xtrans demosaic

- floating point division for interpolation
- use roi offsets for border interpolate & lookup creation
- safer fcol macro
- store central pixel color in lookup
- more meaningful variable names
handle xtrans sensor in white balance module

as white balance comes before demosaic, this fixes the weird pattern
in images
working quick clip/zoom of xtrans data

dt_iop_clip_and_zoom_demosaic_onethird_size_xtrans() works now,
parallel to dt_iop_clip_and_zoom_demosaic_half_size(). Not most
optimized code.

NOTES:
- The upper limits for px/py and maxi/maxj aren't tested
- Things may get odd if scale is > 2/3, but that shouldn't happen?