todo

make a documentation with all attributes and their requirements
add author to user.Insert statement
make title NOT NULL
in frontend, make all the requirements clear to user in italics and light gray maybe even smaller font and add required star *
add multiple connect statements in databse.go because of different privileges
remove the mysql connect funcs in database.go
add creation date to tag and user and rename it in note table
check if things unique in database already exist (like username, email, etc.)
format log messages for example log.Println("ERROR: %s", err)
make a function that takes response parameters and logs them to the console, that way it can be executed at the end of every api answer
maybe split the api handlers and the frontend handlers into seperate files
export schema as png to docs/imgs/schema.png

tasks

fix the time conversion bug
work on the rest api getting object by their ID in order user -> notes -> tags
work on the rest api getting linked things (like user->all posts by user) in order notes -> tags