[BUGFIX] InlineSettings broken if extJs not loaded

The pagerenderer can add javascript inline settings to the output.
This does not work if extJs is not loaded, because of missing
initialization of js object TYPO3.
This patch makes sure that TYPO3 object is iniitalized correctly,
if extJs is not loaded.

Change-Id: I2f9750cd0188cbbb042d02b6d3f5c6da2a544589
Fixes: #38879
Releases: 6.2, 6.1, 6.0
Reviewed-on: https://review.typo3.org/12872
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[TASK] Remove dummy files in typo3/classes/

Change-Id: I8ee215e43b60dae0da04087d510771479aaaaa04
Resolves: #47797
Related: #47756
Releases: 6.2
Reviewed-on: https://review.typo3.org/20388
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn