hide items that aren't friends' actual posts

[snarfed]

maybe make this an end user option; maybe just do it and see if anyone complains. :P

full list:

• "[friend] liked this/a ..."
• "[friend] likes [page]"
• "[friend] commented on this/a ..."
• "[friend] replied to a ..."
• "was tagged in"
• "[friend] and X are now friends"
• "X, Y, and n others commented on [friend]'s ..."
• "X wrote on [friend]'s wall"
  ...also rendered as:
  • "X wrote on [friend]'s timeline"
  • "X > [friend] ..."
• "[friend] was mentioned in a ..."
• "[friend] followed X."

[snarfed]

i'll reopen when i find new examples to hide.

here's one that i think showed up because a friend liked it, but the story text doesn't mention that. :/ https://m.facebook.com/story.php?story_fbid=10207710593227387&id=1369490616

i've captured the full html locally.

[snarfed]

another: https://m.facebook.com/story.php?story_fbid=10153883911834311&id=739769310