add buttons on screens

update taskboard

update readme.md

add .env.example

update note fields

integrates function create note on front and update notes fields on backend

integrates function schedule lab and implements speech kit on front

update readme.md

integrates function create evaluation on front

update relations

integrates function show class info on front

integrates function create discipline on front

create notes functions and tests

add list laboratories function

create laboratories functions and tests