Add double_quotes_in_tags critical check
Fix unescaped_ampersands critical check
Move doublequoting check to cosmetic category

Note: refresh all CachedMethod.GET_CHECKS values after appling this
commit (unit_count cached attribute was renamed to unit_critical_error_count)
Avoid refreshing stats for obsolete stores

Since a Store can be obsolete we have a bug #3322. Let's add extra check
if a Store is not obsolete in refresh_stats.
Increase job timeout for refresh_stats
Don't change unit state when editing obsolete store

Prevent data inconsistency which can happen in #3322.
Skip image banners source strings in double_quotes_in_tags check