This reverts commit 437026f3.

* init i18n support

* polish translations and fix some bugs introduced

1. fix flyway migration Chinese garbled issue
2. limit hibernate query plan cache
3. fix import/export api
4. wording update for yaml/yml namespace support
5. update ldap sample configurations

1. support yaml config file transform to properties
2. support yaml config file injection to Spring

app's admin can create private namespace. & default create namespace when create public appnamespace

1. add org info display
2. add input validator
3. add org id prefix to namespace
4. hotfix: to clear id value for create