Add list of finished

See merge request !9

join sifrovacka only when it is active

See merge request !8

set default language to czech in settings.py

See merge request !7

fixed mobile view sifrovacka

See merge request !6

add dates into sifrovacka page

See merge request djz.88/sifrovacka!5

Revert "Merge branch 'two-step-reg' into 'main'"

See merge request djz.88/sifrovacka!4

This reverts merge request !3

add dates into sifrovacka page

See merge request djz.88/sifrovacka!3

Added stage web page

* adjusted models to reflect open stages for user and some
  fileds added (img, desc uuid passphare etc.)
* new view STAGE which now contains stages and allows to see
  only stage for user on which is currently user at

See merge request djz.88/sifrovacky!2

* assigment of first stage
* finish button at last stage
* removed some debug stuff

* sifrovacka page now shows current user stage and
  if applicable signup button to start sifrovacka

* sifrovacka model enhanced to upload picture and
  descrtioption acting as STAGE O visible for all

* adjusted models to reflect open stages for user and some
  fileds added (img, desc uuid passphare etc.)
* new view STAGE which now contains stages and allows to see
  only stage for user on which is currently user at