change location of the call to chartkick in the head (layout) + test chartkick to plot the category name/is_expense and sum the amount
change float to decimal for budget amount (problem in charts otherwise) + add some charts (not finished) + arrange design and permissions
remove is_blocked from users model + fix form layout (edit and new) + fix authorization bugs + when editing his profil, user doesn't need to fill the password confirmation if the password didn't changed
db migration to remove is_blocked from users model