* [RAPPS] add function to set view-mode
* [RAPPS] move toolbar and searchbar into appview
* [RAPPS] remove settings and exit button from toolbar
* [RAPPS] add code to switch between list and tile mode
* [RAPPS] add auto-arrange for listview
* [RAPPS] adjust the minimum size of AppView
* [RAPPS] now image list of listview is stored inside the class
* [RAPPS] add list mode, and old list-mode are detail mode now
* [RAPPS] add check for unimplemented view mode
* [RAPPS] separate application-view from gui.cpp
* [RAPPS] make the code looks more clear
* [RAPPS] fix & improve tab-order handle
* [RAPPS] now double-click / right-click & install an item will install exactly this app
* [RAPPS] add handling for DWORD timestamp for InstallDate
* [RAPPS] make the code setting column style more clear
* [RAPPS] change the owner of popup-menu
* [RAPPS] now the popup menu (the one when right-click listview) now belongs to application-view