Revert "Update version to 4.4.5"

This reverts commit 94e9b0c54b018c68691cd715aa0f1978896b53d5.
CRM-14092 - restrictBrowsing - Defensive programming

It's OK if restrictBrowsing fails -- because we'll still perform a
behavioral test and alert admin if browsing is enabled.
CRM-14092 - isBrowsable - Defensive programming
Merge pull request #2489 from totten/4.4-restrictBrowsing-defensive

CRM-14092 - restrictBrowsing - Defensive programming