add color definition file in values with a set of predefined opaque and
half transparent colors
add color resource folder with color selectors for lists
added a set of shapes and selectors for list items
- two types, for line switching
update fragment and list entry layouts to make use of the selector and
updated the list entries look (minimum height, text selector according
to the item selector)
updated CursorAdapter classes to set the different line appearances
don't add month entries, when the workload is lesser or equal to zero