Fix ConfigChangeContentBuilder update item issue

hibernate will persist every changes made to entities during the session, so in ConfigChangeContentBuilder case, we should clone the entity first to not trigger unnecessary writes to the db

version to 0.10.0-SNAPSHOT

version to 0.9.1

turn off admin.createPrivateNamespace.switch by default

fix text namespace diff view when releaseId is provided in url

fix app builder owner name field assignment

refactor httputil error stream handling

clear http response inputstream and errorstream to reuse connection.

write builder function for entity App and optimization some null judge