add Internet permission and screen size constraint into manifest file,
tzpalette will not support small screen device
Update database to introduce a new column "thumb_small" into PaleteThumb
table, And set its maximums size is 300 in Constants
Add the code logic to add/update the thumb_small in PaletteDataSource
and PaletteDataHelper
switch the PaletteListView to use small thumb in its item. it will
improve the list display/scroll performance a little bit
Change the defalut color analysis number from 6 to 8.
Change the version code to 3, and version name to "pre-alpha 2"