Tasmanager 1.1 feature declaration

This release should implement the following features:
- taskbar: https://blueprints.launchpad.net/evo.taskmanager/+spec/taskbar
- to-do view: https://blueprints.launchpad.net/evo.taskmanager/+spec/to-do-view-implementation
- revamped default view: https://blueprints.launchpad.net/evo.taskmanager/+spec/new-default-layout
- google calendar integration
- remove unnecessary codes: https://blueprints.launchpad.net/evo.taskmanager/+spec/unnecessary-code
- major date input box improvements
- fix remaining bugs: https://launchpad.net/evo.taskmanager/+milestone/1.1.0/
   * only those reported to milestone 1.1.0 stable release
   * revisit, reconsider bugs after RC, assign low priority ones to milestone 1.1.1 patch release
. implement all features approved as wishlist for 1.1.0