ubuntu-docs string freeze break (typos and updated 'disable shopping results')

[Jeremy Bicha]

Some high-visibility mistakes were discovered this weekend by our
translators in the brand new Unity lens pages in ubuntu-docs. I've
updated the docs to fix these and updated the pot as well.

I also fixed bug 1058658 ("hierarchies") and did a sed replace on the
po files so that translations shouldn't be affected by it.

As discussed last week, I've also updated the "disable shopping
results" page for the new Privacy switch. I count about 4 strings
changed for that.

http://pad.lv/1058565
http://pad.lv/1058658
http://pad.lv/1054746

Thank you,
Jeremy