-moved content from qtdoc
-moved snippets to src/scripttools
-enabled 'make docs'
-edited QScriptEngineDebugger with the proper module identifier
-created two way links from Qt Script to Qt Script Tools

Change-Id: I83a76278969528dcb1ecbca4acc8563fe9390978
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Reviewed-by: Geir Vattekar <geir.vattekar@digia.com>