LPS-46780 Comments API: absorb MessageBoard usages from Blogs JSP files

https://issues.liferay.com/browse/LPS-46780
LPS-46780 Use plural to be consistent
LPS-46780 Format source
LPS-46780 SF
LPS-48407 Creates a new property to decide if we reindex all the article versions or we only index the last approved version
LPS-48407 Index only the last indexable version when JOURNAL_ARTICLE_EXPIRE_ALL_VERSIONS is equals to false
LPS-48407 Test - Adds new test to check the new property
LPS-48407 Rename
LPS-48407 SF
LPS-48407 Use @DeleteAfterTestRun
LPS-48407 SF
LPS-48407 SF
LPS-48299 Add new method to the SMDH interface to support to fetch existing model on the import site
LPS-48299 Add base implementation which tries to find the entity in the whole site hierarchy on the import side
LPS-48299 Add implementation to all the StagedGroupModel SMDH's
LPS-48299 We do not want to fail the import if the group doesn't present, instead we want to use the actual scopegroupd (and its parent groups) as a fallback
LPS-48299 We do not need these anymore since the base impl can handle the generic validation pattern
LPS-48299 Apply changes everywhere
LPS-48299 Fix failing tests
LPS-48299 Do not throw any exception for the fetcher method