Revert "Removed the login screen, UpdateActivity is now a fragment within the compassactivity.  Issues: when you log in, it stays in the same fragment, and keeps the keyboard up, but it gets all the info and runs refresheverything or whatever.  the app also works perfectly fine "offline", aka the pages are empty if you go there directly without logging in."

This reverts commit af8ea0ae4fa42a8a3e2870d09ac6ea38dc605982.
stay logged in and ask for password when needed for refresh
added logout button
add back commented out line
save password in accountmanager
`save password in accountmanager
merge
merge
Merge branch 'stay-logged-in'
moved stuff into separate packages so it is more organized