Reverting accidental commits

This reverts commit 3100e690adbb35fc356b5e0d0ca6c31fc6f5c830.
Revert "fix GitControl setCwd, getting the LK directory with lively.shell stopped working"

This reverts commit 3100e690adbb35fc356b5e0d0ca6c31fc6f5c830.

Revert "lively-web.org: dirwatcher R-lib ignore"
This reverts commit 28a4ba68c062095acec082ed6825d237b92965a8.

Revert "lively-web.org gitignore updates"
This reverts commit 5deaefbf6f85476baf6841bd29f56c810aebfc3d.

Revert "welcome page for lively-web.org: less stuff"
This reverts commit 750147b8acaf500176e807a34bde794e914d45b7.

Revert "Rick's welcome page improvements"
This reverts commit 2c6cb5f6be6c26fd9bbf66e65e816b0c6eb33fd1.

Revert "fixing welcome.html engine align on safari"
This reverts commit 7f5f5f4474308ca06a804f6f1b4ac5a123acefd6.

Revert "new welcome world for lively-web.org"
This reverts commit f4c692d9e8b63701c31b15de306112ba8d11636d.