Tag implication: straddling -> straddle

straddling -> straddle

Reason: Right now we have both tags separate, with straddle having the large majority of the posts. It's also the one with the wiki entry and current associations. Otherwise, thinking they should just be one in the same, unless someone can think of a reason they shouldn't be.

Since straddle only has 11 posts, I think it should be a straddle -> straddling alias to conform with noun -> gerund aliases.

straddle has 6929 posts. straddling has 11.
Whether noun or gerund form are used depends on the tag.
Usually, if the action is important -> gerund
If the visual state is more important -> noun

Gerund form sounds a bit more natural here, will go with that. Changed thigh_straddle as well.

This alias is bugged. Most posts had straddling added to them but didn't have straddle removed.

remove implication cowgirl_position -> straddle
remove implication reverse_cowgirl_position -> straddle
create implication cowgirl_position -> straddling
create implication reverse_cowgirl_position -> straddling

Processed the requested fix