So, after several years using Eclipse I finally decided to give IntelliJ a chance (ultimate edition). I added the tomcat server in the file->settings... option. The tomcat integration plugin is also enabled in the plugin list. Hitting Control + Shift + A and typing "Application Servers" will show me a "disabled" option. The same happens in the View menu. So, how can I enable the tab, deploy and manage my web apps? Thanks :)
For this tool window to be available, the Application Servers View plugin must be enabled and there must be at least one application server run/debug configuration in your project.
Source: http://www.jetbrains.com/idea/webhelp/application-servers-tool-window.html