Find inconsistencies between original text and its translation

Implement some functionality similar to what gettext-lint would do with PO files. That is, the original string and its translation are searched for mismatches such as an accelerator key '&' being present in one but not in the other. Also mismatching full stops (.) at the end of strings are searched for, among other things.

Entries containing such inconsistensies are marked with yellow color in the list view. As inconsistensies are not technically errors, they are not reported as issues in validation.