e2e tests for changing password feature

[dennis00010011b]

Relates to #82

Added tests for feature 'Change password':

• check screen "Settings" -> "Change password"
  • checks if "Change password" button is present and enabled
  • screen contains correct title
  • screen contains correct label
  • clicking the button "No" bring back to "Setting" screen
• validation of errors:
  • error if new password shorter than 8 digits
  • error if new password doesn't match confirmation
  • error if new password match old password
  • error if old password incorrect
  • no errors if old, new, confirm new passwords are correct; user can change password
• check if new password is accepted:
  • user can log out
  • accepts new password after lock

[vbaranov]

lint test failed:

✖ 45 problems (12 errors, 33 warnings)
12 errors, 33 warnings potentially fixable with the --fix option.

@dennis00010011b you can fix it with npm run lint -- --fix

[dennis00010011b]

@vbaranov
fixed