Deletes root/version.json, it was added by mistake.
Adds ccs-res submodule for storing resources of CocoStudio
cocosgui -> cocosui, update Xcode project.
tab -> 4spaces for TestCpp/Classes/AppDelegate.cpp
Updates TestJavascript.xcodeproj
Ignore external/version.json
libExtension.vcxproj doesn't depend on libBox2D
Merge pull request #6624 from dumganhar/v2

[v2] Adds 'ccs-res' submodule for storing CocoStudio resources, use the same version as v3 branch
added missing required Assets files
added missing required Assets files
added missing required Assets files
added missing required Assets files
added missing required Assets files
added missing required Assets files
Merge pull request #6640 from MSOpenTech/wp8-v2-fix

Added missing Assets files to WP8 projects
issue #4660: Uses utf8/16 conversion in llvm3.4
issue #4660: Updates xcode project
issue #4660: Updates where using cc_utf8_to_utf16 and cc_utf16_to_utf8
issue #4660: Adds licenses
issue #4660: Updates where uses cc_utf8_strlen