[[ Bug 11928 ]] Fix inclusion of CR when doing 'delete the selectedChunk...

...'.

[[ Bug 11928 ]] Fix paragraph style merging when doing 'delete the selectedChunk' and the selectedChunk contains a whole paragraph and trailing CR.
[[ Bug 11928 ]] Fix 'get the selectedChunk; delete it' - it now works correctly every time and not just the first.