Fix version menu selection of current langauge.
updated wp8 plugin authoring to not use wp7 terms or classpath
link to new windows 8 plugin auth guide
Created Windows 8 plugin auth guide.
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cordova-docs
CB-6926 Clarify some misconceptions

- Cordova does not provide any UI widgets or MV* frameworks
- plugins should have a unified JS interface
- no plugins are present in a newly-created project
- HTML5 app assets usually are local to the device instead of served remotely
CB-6926 Clarify locally stored HTML5 assets