Various, especially randq working, admin page

and stylesheet, and some corrections everywhere
Most urgent: get docx and pdf to WORK.
DOCX et al

DONE:
DOCX working!!
Admin page changes
Restructuring of includes
TODO:
More admin.php stuff
Improve regex to handle line breaks well
Attempts at PDF and multiple upload failed
Sometimes weird unicode characters appear in parsing
User system
quickie bug with defining DB_DB, new todos

TODO now:
admin.php
handling duplicates (just in case upload second time)
regex line breaks handling
pdf, multiple upload
weird unicode char appearances
user system :O