L10N: Updated Persian translations
Added initial Hungarian translation
Added hu to HELP_LINGUAS
test-ephy-web-view: fix test cases for autosearch

The dot doesn't need to be escaped. Add an extra test case for a
string that needs escaping.
[release] 3.10.1
Updated Greek translation
help: passwords not shown in Personal Data
help: correct help for managing passwords
help: remove empty desc tags
help: improve wording for pref-passwords desc