Move from NLua to Eluant

- Changed from NLua to Eluant because of memory leak problems
- Renamed object Table to WherigoObject
Changed WherigoObject to copy the reference to the LuaTable wigtable
Removed bugs of wrong type conversion

Removed many bugs because of type conversion from LuaValue to other
types..
Bug in save file removed
Some cosmetic work

- Inserted copyright for Eluant in all Eluant files
- Removed unused files
- Removed NLua
- Updated Lua libraries for Android and iOS
- Extend AssemblyInfo.cs for use with iOS to link the Lua library
Some minor bug fixes

- Check for nil tables when there is no location signal
- StopSounds call, that the player don't crash at the end
- Check for ObjIndex in Inventory update
Data Abstraction, and Core refactoring
+Moved libs to /lib

Known issues:
- Potential crash in LuaDataFactory.CreateWherigoObjectCore()
- Loading GWS crashes.
Removed bugs

- Removed bugs from Load/Save
- InsertedEnv.Ok for string "Ok" in Wherigo.lua, supported by
PlatformHelper
- Replace unit nmi with nm for nautic miles
Various fixes

- Fixed LuaDataContainer enumerating native lua values instead of
wrapping them.
- Changed LuaDataContainer.GetProvider returns self-providers (methods)
by default. Impacts GetWherigoObjectListFromProvider as well.
- Fixed wherigo object creation in LuaDataFactory failing sometimes.
Removed some typos
Fixed a typo
Moved default strings from Wherigo.lua to PlatformHelper

- Moved EmptyList strings to PlatformHelper
- Added AttributeChangedEvent for Points of zones in Wherigo.lua
ZonePoint to geocoordinate conversion
Removed unused comments.
Changes for using Eluant by Android Core
Removed a bug with writing strings to GWS file

- Removed bug, which writes strings in wrong encoding to GWS file
Added MAP to enum ScreenType
Added CordBounds as new class for holding bounds of the game

- Added class for CoordBounds
- Added property Bounds for class Zone, which is the biggest rectangle,
which include the zone
- Added property Bounds for Engine, which is the biggest rectangle for
all zones and object locations visible and active at the moment
Changed Eluant
Moved CoordBounds from Utils to Core

- Moved CoordBounds
- Removed Libs folder