update copyright
Merge pull request #189 from m4r71n/pr-copyright

update copyright
Refactor menu action for user commands
Handle Unix signals properly
Cleanup test code in App
Fix context menu position if text wrapping is disabled
Qt 5 requires non-inline contructor for QScopedPointer with PIMPL
Realign widgets in configuration dialog

Center options vertically and horizontally in dialog.

Use scroll area for all option so that widgets are not squeezed.
Don't use border and darker background in QScrollArea widgets
Fix an authors email address

- Change from a work to personal email address in AUTHORS and
  aboutdialog.cpp
Merge pull request #168 from mdentremont/master

Fixing authors
Remove unused internal option "_last_hash"
Remove duplicate code
Split common.h header
v2.1.0beta
Tests: Fix external editor test
Updated translations (completed Czech)
fix windows build
Merge pull request #191 from m4r71n/pr-fix_windows_build

fix windows build
Defer deletion of socket and add more debug logging