[FIX] DateFormat: Fixed issues with strict parsing

- Fallback formats used hh instead of HH
- If timezone caused a change of the UTC day date was rejected

Change-Id: I5831b276f2fcbf47ac051c873bddd8b240aae94b
[INTERNAL] AppCacheBuster: private hooks before/after loading index file

The AppCacheBuster offers support to override and prevent to load the
index files from the backend by overriding the hook
sap.ui.core.AppCacheBuster.onIndexLoad and return the index map for the
URL. The result of a index request can be intercepted by overriding the
sap.ui.core.AppCacheBuster.onIndexLoaded function.

Change-Id: Id551dd540655072e202796032ffa77a54cb811eb
Merge "[FIX] DateFormat: Fixed issues with strict parsing"
Merge "[INTERNAL] AppCacheBuster: private hooks before/after loading index file"