Mwallx

Search option for source string changed after or before some date

1

### Describe the problem We already have this feature to search the target strings, and we recently encountered a bug that weblate fails to label updated source string with needs-editing,...

https://docs.google.com/document/d/1w6XRrmiP1kvlTfWN8X_A3h-zd5SXC1IoB2kJZBYja0M/edit changelogs here

This PR solves 3 issues: 1. The vanilla code for AbstractCard.initializeDescriptionCN() (used by zhs, kor and jpn etc) uses a flawed logic which would result card strings with double space...