How to enable Quick Edit of Content?

I have several hundred entries to quickly modify that were imported incorrectly. The body is plain text for each article and it is actually more difficult to modify the reimportation of data as these entries need manual tweaking. Is there a plugin or such that will facilitate editing of content right from the main admin view via Quick Edit for Posts?

If there’s not, what would be the best way to modify the code to facilitate this as it seems that this would be quite useful going forward to have the option of just getting raw HTML to edit in a Quick Edit view.