Fails to register the amounts of ingredients

[chiffa]

This issue seems to be related to #989

When the amounts are entered manually following a parse fail, all the amounts, except fractions, are lost upon the application re-start.

My best guess would be something not working out in SQL interface with floats/integers.

Version 0.17.4-win32, installed on Windows 10, Version 1903

[cydanil]

This has to do with the regex employed to parse the text input.

In a fork, I showed a few examples of inputs that should work, but aren't handled correctly.

[chiffa]

That would make sense for parsing (#989), but why when the data is then re-entered manually it fails to save?