Use the Alt+R, now that default shortcuts for save macros are not
created by default.

Merge-request: 236
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

When saving a macro, a shortcut is created and the user can change the
shortcut in Options->Keyboard.
When the macro is removed, the shortcut is removed from the
actionManager using the removeShortcut method.
This is way simpler than before, where a number of default shortcuts
where defined and macros took the empty space.

Merge-request: 236
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

Also change the default "Execute last macro" to a one sequence shortcut.

Merge-request: 234
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>
Task-number: QTCREATORBUG-3500

This plugin let the user record and replay some macros:
 * 3 handlers: action, find and texteditor
 * almost all texteditor and cpp actions recorded
 * options page to set the directories where the macros are stored
 * optional dialog to give a name and comment at the end of a macro
 * locator integration to play a macro
 * shortcuts assignment to macro

The most important change outside the plugin macros is the isScriptable method
for command: All scriptable commands can be stored in a macro.

Merge-request: 2176
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>