Wizard Improvement for 9.3

Several labels improvements, as well some UI modifications:

Page intro

• [x] Nuxeo Application -> Nuxeo Server
• [x] Remove: "You won't need to configure your application again."
• [x] Remove: "You can also change these settings later, in the Admin Center."
• [x] "Default parameters are for test purpose only. For production environment, please refer to the official installation documentation: https://doc.nuxeo.com/nxdoc/installation/"

Database settings

• [x] Remove "Relational"

User&Groups

• [x] Default -> Database (Default)
• [x] Muti-directory -> Multi Directory (Database + LDAP); as well as sub-combobox entries.
• [x] Remove Warning about Studio Override
• [x] "Nuxeo SQL database" -> "Nuxeo database"
• [x] "another kind of directory" -> "another source"

Modules

• [x] Modules -> Addons, "Select Modules" -> "Select Addons", etc.
• [x] "Select the features you would like to install with the Nuxeo Platform. " -> "Select the features you would like to install on the Nuxeo Server. "
• [x] Remove "Nuxeo JSF UI"
• [x] Remove "JSF UI dependency"
• [x] Remove from Web UI desc: "Web UI is the new UI for Nuxeo Server."

Downloads

• [x] Rename Modules -> Addons