Merge pull request #176 from Quintinon/master

Minor Tweaks to UI and Fixed an error in NPC Trade
Auto walker update must be done from C++ not lua due to bot protection.

* Moved the auto walk checker to the source.
* Implemented a temporary fix for findPath method (will now choose other tiles over null tiles).
New sexy 'move stackable item' window!
Just rename some files
* Fix a server ping issue
Fix minor issues in item drawing
* Add some utilities functions
Minor changes in sql classes
Many UI improvements and minor fixes
Fix possible crashs when using server class
Fix platform issues regarding charsets
* IMPORTANT: A new dependency is required, boost_locale, comes with boost 1.50.0 or later
* Copying and pasting special characters should now work
* Running otclient from filepaths with special characters should work now too
Restore support for animated png files
* Rework resource manager
* Add missing files
* Improve some graphics classes