Extend cloneBlock function to use like cloneRow but without table

[totpero]

I have extend cloneBlock function, i have add another parameter $incrementVariables default TRUE;

This parameter can transform the cloneBlock function in alternative to cloneRow function working without table;

I extend this because i have need to use the cloneRow but in regular text not using table and cloneRow not allow this.

[FBnil]

@totpero Your code implements incrementVariables for cloneBlock().

I did an effort too to add this functionality, see FBnil#1
I incorporated some of your ideas and expanded on that. What do you think about the new TemplateProcessor?

[troosan]

this one will be hard to merge because a lot changed since.
I'll merge #817 instead, but it needs a bit of work to be able to pass argument $incrementVariables (which should default to false for backward compatibility reasons)