Removed trailing spaces

Signed-off-by: Jan Pecha <janpecha@email.cz>
Added partial support for undo and redo in textarea

Signed-off-by: Jan Pecha <janpecha@email.cz>
CzSelection: missing @param for inputText()

Signed-off-by: Jan Pecha <janpecha@email.cz>
Added partial undo-redo for wrapLines() & unwrapLines()

Signed-off-by: Jan Pecha <janpecha@email.cz>