* Window for properties edit is introduced. Now it shows only prop
names, loaded from Preset corresponding to POI. Disappears in 5 secs
+ Added ok button to close props window. TODO: reset timeout timer
Preset classes reworked to support text notes (and adding audio notes
will be easy)
Propwindow shows for both POIs and TextMarkers
propagate recent changes of layout to landscape orientation
Property editing works to some extent in tablet 4.0, not on phone 2.3.3
variant with LinearLayout (not scrolling), works much better
* Working property editing, both for tablet and phone, based on
ListView, so should be scrollable. 
+ Added files I forgot to add earlier
* icons with slightly larger small parts
icon source
* refactored property window xml part. TODO: refactor code as well
* separated land-large layout.
*refactored code for PropsWin
* moved OK button on top of the window so it's not overlapped by soft
keyboard
* Dialog-like window for properties on large tablets
Usable on the phone too
*cleaned debug stuff
+ Added base functionality of preset XML loading
* bugfixes
* Support for boolean and choice propoerty types from XML
* Tweaked preset xml
* Different property types have different controls. ListView proved
unusably cumbersome.