Write internal version of tsi
New file format for internal index
Load first book if failed to load the last or bookId 0 on startup.
Load xrefs and footnotes from internal more correctly
Keep android.support.v7.widget.SearchView from deleted by proguard
Keep android.support.v7.widget.SearchView from deleted by proguard
Merge commit '91055e27125a7e63c4bc8746647a96ca0f319628' into develop