Revert "IMPORTANT NOTICE added"

This reverts commit db1eec49999acea47fcb47d4619d8866c945a02a.
Revert "Revert "IMPORTANT NOTICE added""

This reverts commit 2d7aa30021c92b36d16c13228e0862397388edeb.
Made some changes simultaiously

We can discuss this code, after which we can merge what we'd like to
merge.
Tried adding tabs
Fixed tabs
Optimization
Settings for display style, and put all js files in a folder.
Merge pull request #2 from TieSoul/buildings

Tabs and Settings (also some optimization)