[Release 1.4.x] Activity System 1.0

[exdiogene]

Yes, i noticed about this.

I wrote about this situation at MyBBoard.net and i was supposed to edit that plugin to modify it a little next week, including taking out that "%" hardly coded there by ghazal for an unknown reason...

I wanted to insert a new setting, the maximum "activity" value, where it will cease to increase. I wanted also to modify the code for display a percentage of the maximum value only if the "symbol" was "%", for anything else it would display the plain value with the symbol.