Merge branch 'release-0.5.3'

.gitignore

CHANGELOG.rst

data/ts/en_US.ts

pkg/linux/README.rst

pkg/linux/bitmask-root

pkg/linux/leap-install-helper.sh

pkg/linux/polkit/se.leap.bitmask.bundle.policy

relnotes.txt

setup.py

src/leap/bitmask/__init__.py

src/leap/bitmask/app.py

src/leap/bitmask/backend/__init__.py

src/leap/bitmask/backend/components.py

src/leap/bitmask/backend/leapbackend.py

src/leap/bitmask/backend/leapsignaler.py

src/leap/bitmask/config/providerconfig.py

src/leap/bitmask/gui/eip_status.py

src/leap/bitmask/gui/mainwindow.py

src/leap/bitmask/gui/twisted_main.py

src/leap/bitmask/gui/ui/wizard.ui