[taskpanel] Continue work on revamp
Issues:
- Sometimes the screencast preview doesn't load (existing issue)
- We need to set the minimized window delegate so there aren't repeat window minimize/maximize animations
- KWin window fade animation makes the animation feel a bit too blurry (a bit of motion sickness)
Second milestone:
- Put app icon behind app preview in case it's not loaded
- Add "window decoration" to each task
- Add swipe all the way up to homescreen gesture
- Swipe left/right gesture on task panel to switch between open apps
- Extend swipeable area to move listview to the entire screen
Third milestone:
- Look into an improved gridview, that's perfect for tablets/phablets
- Add customization button (for opening settings page, and to switch to grid view)
- Add application list order by recently opened rather than alphabetical
- Screen edge gesture (so navbar can be hidden?)
Edited by Devin Lin