Improve filter on import

Instead of showing all images, we set the filter to the smaller of the
default import rating and the current filter. This ensures that the
imported images are shown, but that we don't reduce the filter
unnecessarily.
Update comments for improved import filter handling
Strings: Acronyms capitalized.
Revert "camera import: don't compile it by default, it's dangerous."

This reverts commit ea276e40e0e4aa7d77c839aaa629b48e13f12529.
Delete libpeerconnection.log
Removes support for deleting images from camera.

This option has proved to be dangerous and should anyway never be used.
It is far safer to keep the pictures on the sd/xd/cf card and letting
time to develop and put the pictures on a safe storage (RAID, external
storage service...). Then when a card is to be reused it can be formatted
on the camera.
Merge pull request #274 from adsr303/plpo

Update Polish translation
Merge branch 'enable-safe-camera-import'

* enable-safe-camera-import:
  Removes support for deleting images from camera.
  Revert "camera import: don't compile it by default, it's dangerous."
rawspeed: support samsung nx2000
(cherry picked from commit f7ccef5ce9adc81ce5441eae09e82d75a93be01f)
[l10n] Swedish update of ellipse-related strings
Add colorbalance to translatable files
masks: add brush
Update french translation.
rawspeed: sony rx100m2
(cherry picked from commit 77de898fc094a25ca03d646fcf8e1af857727541)
brush masks: add poor man's memory monitoring
Merge branch 'master' of ssh://github.com/darktable-org/darktable
brush masks: some more fixes
Update french translation (keep lift).
Italian translation updated for module color balance
Merge pull request #275 from bartokk/master

Italian translation updated for new module color balance