Commented Feature: "Show only lines with missing strings" option should be applied to currently chosen columns only [1338]

1. _Show only lines with missing strings_ option should be applied to currently chosen columns. Now it is applied to all available columns in resource files.
Comments: Associated with changeset 33112: 1337: Export selection exports only selected lines and columns
1338/1339: "Show only lines with missing strings" filters only the visible columns.