MainWindow2: remove ununsed action 'Extend Frame'

--HG--
branch : customkb
Prepare to implement custom keyboard shorcuts, remove all hard-coded shortcuts.

--HG--
branch : customkb
PencilDef: define command constatns for keyboard shortcuts

--HG--
branch : customkb
MainWindow2: create method loadShortcuts()

--HG--
branch : customkb
add default shortcuts setting file

--HG--
branch : customkb
Merge

--HG--
branch : customkb
README: pencil -> pencil2d, add Morevna's release note
README: minor
Merge with default

--HG--
branch : customkb
MainWindow2: remove unused method loadPlugins()

--HG--
branch : customkb
MainWindow2: fix compile error.

--HG--
branch : customkb
Editor: minor

--HG--
branch : customkb
PencilDef: #define CMD_IMPORT_MOVIE

--HG--
branch : customkb
MainWindow2: link some shortcuts from setting file, not test yet.

--HG--
branch : customkb
MacOS: fix compile error

--HG--
branch : customkb
PencilDef: #define CMD_IMPORT_PALETTE

--HG--
branch : customkb
move kb.ini into .qrc

--HG--
branch : customkb
rename : kb.ini => resources/kb.ini
UI: Reset View => Reset Zoom/Rotate

--HG--
branch : customkb
MainWindow2: add more shortcuts

--HG--
branch : customkb
What?

--HG--
branch : customkb