Fix #4189
Partial fix #7708
Merge pull request #755 from ddanielvaz/fix-4189

Fix #4189
Merge pull request #760 from ddanielvaz/partial-fix-7708

Partial fix for #7708
[sextante] fix obtaining vector layers
[attrtable] Dismiss cached data when column is removed (Fix #8405)
translation update: another kr update