Try to install JST Server Adapters and JST Server Adapters Extentions. I am running Eclipse 4.4.2 Luna and it worked.
Here are the steps I followed:
Help -> Install New Software
Choose “Luna – http://download.eclipse.org/releases/luna” site
Expand “Web, XML, and Java EE Development”
Check JST Server Adapters and JST Server Adapters Extentions