"first" bugs in 0.5.16-R610 : Components

I found the following bugs:

- (at least) for RCL: the value and unit is not visible when dropping onto the workarea (in properties it is activated and can be activated by toggling)
- (at least) for C: the text box in properties shows "1e-05", but the letter "e" cannot be input by keyboard, only by copy and paste


And a good thing: the undo/redo function looks much much more stable :-)

- (at least) for RCL: the value and unit is not visible when dropping onto the workarea (in properties it is activated and can be activated by toggling)

Solved in Rev 612.

- (at least) for C: the text box in properties shows "1e-05", but the letter "e" cannot be input by keyboard, only by copy and paste

By now is only possible to input just numbers by keyboard.
Indeed it should show: 10 uF, this is also solved.

Implementing this is not tribial and will complicate the code quite a bit.
Not sure if it's worth, but by now I will focus in more critical stuff.

Didn't know that copy/paste would work for that representation...

And a good thing: the undo/redo function looks much much more stable :-)

Good to know, didn't test this too much.
And I'm working to improbe this.