Only use if we have text available & logout fix
Only use if we have text available and no caching

Caching may be causing files not to show in file manager occassionally
and dreaded ERR_CACHE_MISS notification being shown in Chrome currently
Slightly faster trial remaining bar anim
doNext is starting and replace Win line endings too
Only include this chunk if githubDIff is true
Login screen fades in quickly

Same colour BG, fade in login screen after 50ms delay over 100ms
transition and trial bar begins animation quicker (150ms instead of
500ms)
Bad URL on logout and die to go no further

Location shouldn't contain the dirname of the file or a loggedOut param
(with no CSRF!) - all unnecessary and causes problems
Also add a die() after the header location to go no further.