Made a Big Change - Webmaster Tools Help

So when I first started my site, it was more broad and didn't really have a cohesive feel. I started it about a month and a half ago, and have around 50 articles by now (all from 400-1500 words). I had tons of indexed links that were 404ing from changing around the categories/removing categories, so I de-indexed them all.

Another problem I had is that I used a wordpress theme that had demo data inside. When I imported the data (I wanted to see how it looked) - it was on my live site. Google decided to crawl my page that night and got 100-150 pages with all "ipsum lorem" text.

Anyway, fastforward to now, and I am looking through my webmaster tools. The links that I had requested de-indexing for are still getting crawled somehow (no backlinks to the articles, no mention of them on the site). They also show up in my "indexed links" part of Webmaster Tools, but they are under the removed links section.

Do I have to do anything else to get rid of their footprints?

Second thing is in Webmaster Tools, I check my "content keywords" section. lorem, marius, dui, quam, and a handful of others are still in there? Only a few of my actual keywords are showing in there but those are dominating this.

Is there a way to have all my pages completely removed from the history - any advice, or help would really be appreciated.

How did you de-index your pages? If you simply removed from GWT, that isn't enough. You'll also need to 404 (or better yet 410) the pages you'd like to remove, or Googlebot will keep coming back. Googlebot will stop crawling after the first or second time it sees the 404/410.

The "content keywords" are not updated in real time. The list should update within 1-2 weeks after Googlebot sees the 404/410.

I have to set the 404 up in my htaccess, or just have the page return a 404? Because when I get crawler errors, it gets 404's anyway because I had removed those pages from my site.