Changes in the UI according to the glossary

[werpuc]

As we rework the application, changes in UI should be made:

• default values should be Daltons, with fractional as an option
• labels and descriptions should be changed accordingly
• helper should be updated and added links to the improved documentation
• ...

All of these changes should be also included in the report!

[werpuc]

Helpers left

[werpuc]

As discussed in discussion the term uncertainty should be used instead of error.