Proxy Work

git-svn-id: svn://svn.jdownloader.org/jdownloader/browser@25467 ebf7c1c2-ba36-0410-9fe8-c592906822b4
StaticProxy: moved to ClonedProxy
Browser:
-major refactoring
-now all request processing is done within openRequestConnection
-updated setRequest
-followConnection now uses loadConnection
-refactored request building
-refactored BrowserException


git-svn-id: svn://svn.jdownloader.org/jdownloader/browser@25480 ebf7c1c2-ba36-0410-9fe8-c592906822b4