Add an IDEA template to cover all related IDEs
Remove individual JetBrains IDE templates in favour of IDEA template
Add .idea/tasks.xmk to IDEA ignore suggections
Remove .idea/ from ObjectiveC in favour of Global/IDEA
Add back out/ for IntelliJ under IDEA
Rename template IDEA->JetBrains
Remove IntelliJ rules from Android -> Global/JetBrains
Merge pull request #831 from arcresu/idea

Consolidate various IDE tempates into Global/JetBrains template