[fix] fixed bug #32 item selected from list view is not shown

modified versionCode

[fix] add a title to a menu item (lint error)

map-drawn background on icon

[mod] added a preference to set whether split actinbar or not.

[mod] added hint to direct adder

[mod] modified icons

[mod] introduced more preferences

[mod] update icons

added tentative icons

[mod] create strings for preferences

[imp] added PreferenceActivity

[mod] import menuitem to dim when there is no csv files

[imp] implemented import/export function

[mod] fixed export logic