Adding more extensions to ftdetect

" 'html.jinja' instead of just 'jinja'. However, we cannot simply take

" everything after the first dot as the file type because something like

" `main.macros.html.jinja` would get the wrong file type as well.

autocmd! BufRead,BufNewFile *.jinja  call <SID>DetectFileExtension(expand('<afile>'))

autocmd! BufRead,BufNewFile *.jinja,*jinja2,*.j2 call <SID>DetectFileExtension(expand('<afile>'))

" Detect a normal or compound file extension (like 'foo.html.jinja')

function! s:DetectFileExtension(fname)