Trebuchet: Hotseat fixes

This change fixes some of the bugs of HotSeat on landscape mode:
* Fixed distance algorithm for XY spatial (not only for X axis)
* Fixed cellX and cellY database handling when items are added in landscape mode
* Fixed cellX and cellY transtions when add new items
* Restore the current hotseat page on rotation

Patchset 2: Fixed create new folder in vertical hotseat
Patchset 3: Fixed broken mTransposeLayoutWithOrientation != true (large screen devices)
            Fixed delete existing folder in vertical hotseat
Patchset 4: Fixed destroy animation when a folder is destroyed in vertical hotseat
            Rebased

Change-Id: I8b0faa5b6fde42d80e0d98226fca07eead04223c
JIRA: CYAN-315
Issue: https://jira.cyanogenmod.org/browse/CYAN-315
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>

Conflicts:

	src/com/cyanogenmod/trebuchet/Hotseat.java
	src/com/cyanogenmod/trebuchet/Launcher.java
	src/com/cyanogenmod/trebuchet/Workspace.java

Signed-off-by: igio90 <giovanni.rocca.90@gmail.com>