jtichava,
If the maven project is a web project, it should have been recognized as such, on import. However, to get content assist on faces files, you will have to add web capability and jsf capability to the project. Right click on the project, go to the MyEclipse sub-menu and select Add Web Capabilities. If you don’t want the wizard to add anything to your project, you should be able to deselect most of the options, or later remove any files or dependencies that were added. Once you have web capabilities, use the same route to add JSF capabilities; again, you can avoid the wizard adding libraries to your project.
If this is not appropriate for your project please let us have more information about the project (such as how it was created and how it is structured, the pom might be useful). Also, please provide the MyEclipse installation details (to get these, go to MyEclipse->Installation Summary->Installation Details).
Please let us know how this works for you.