client issues

[skatt]

- new objects should always have the disable selection property off by default

- horizontal lines should not be movable when selection is disabled

- chart should not automatically scroll to the end on incoming ticks while it is being dragged back by the user

- expert extern inputs not yet implemented?

[skatt]

Here's a relatively minor quibble. Since the period strings have different lengths, append the period strings on to the end of object names instead of at the beginning so that newly created objects can be easily IDed the same way as in MT4.