remake codebrowser
keep selected branch on switching file/commits tab
fix rawcode button and link

- getting rawcode of specific revision(commit)
make type of createdDate from SVN to same as Git
fix commitHistory on HEAD, show branch on diff
define variable in local scope
use findFileInfo instead getMetaData
Merge pull request #425 from laziel/yobi refs/heads/fix-codebrowser-130909