The Curl Developer Utilities have not yet moved up to Curl 7, but if you want to install the docs in your Curl 7.0 Documentation Viewer, the step to follow are easy.
Start by making a copy of the CDU code folder in one of your curl8 working directories. Then make a copy of the manifest. Use the Curl IDE to create a new EMPTY project in that code directory. Paste back in the contents of the old manifest (the IDE will warn that the manifest.mcurl is being over-written) but edit the resulting manifest.mcurl file to flip up to 7.0 and maybe set the version metadata to 0.3.
Now the IDE should show a project with 3 packages. Dbl-click on each package and use the editor to flip the version number in the package expression up from 6.0 to 7.0. Usually you also would have to repeat the same for any .curl or .dcurl file with an applet expression as its header.
Right-click on the top pkg and set the component target settings to generate documentation and apply to all packages. Now hit F7 to deploy.. Next use the IDE to select Help | Install Docs. Click the install button on the dialog pane which opens and then navigate to the directory named deploy-default under this new project. Select the manifest.mcurl file. And you now have CurlUnit documentation back in your Curl 7.0 Documentation Viewer.
Installing the BlazeDS, SQLite and XML package documentation from sourceforge is just as easy as unzip, then use the IDE F1 | Help | Install Docs and then a click on the install button with navigation to folders named docs-install for each package. Packages usually include example code which is still zipped within the unzipped documentation folders. To try out the BlazeDS examples you are going to want a running Apache application server such as Tomcat.