Added editor tab menu functionality.
Added editor tab menu functionality.

ResearchComputing/OIDE,SandstoneHPC/sandstone-ide,ResearchComputing/OIDE,ResearchComputing/OIDE,SandstoneHPC/OIDE,SandstoneHPC/OIDE,SandstoneHPC/sandstone-ide,ResearchComputing/OIDE,SandstoneHPC/sandstone-ide,SandstoneHPC/OIDE