Primeval icons updated

[purpleyin]

People voted for more Primeval icons and here some be.

I added 5 from 2x06 (three primevalstills entries, plus two variants on one); 1 Helen and 4 creature ones.

I updated the following posts:
-a few more to 2x07.
-a few (2 Helen and 2 Nick) intro sequence icons here.
-more challenge icons posted; 1 Caroline and 1 creature icon for 2x03.
-plus 26 added to my 2x01 post.