Add IntelliJ related paths to .gitignore

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: None
• Fix Version/s: liferay-faces-2.1.2-ga3, liferay-faces-3.0.2-legacy-ga3, liferay-faces-3.0.2-ga3, liferay-faces-3.1.2-ga3
• Component/s: Liferay Faces Alloy / Showcase / Tests, Liferay Faces Bridge Impl / Demos / Tests, Liferay Faces Portal / Demos / Tests, Liferay Faces Util, ZZZ: Legacy - Test
• Labels: None

Currently only Eclipse settings are found in .gitignore and task will add the IntelliJ paths as well.