[BE] Create new settings related to upload files by Guest user

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.3.X, 7.3.6 CE GA7, Master
• Component/s: Forms
• Labels:
  • 7310-sp-pending
• Branch Version/s:
  7.3.x
• Backported to Branch:
  Committed
• Sprint: Forms_7.4_03, Forms_7.4_04, Forms_7.4_05, Forms_7.4_06
• Git Pull Request: https://github.com/natocesarrego/liferay-portal/pull/917

Create the following settings on Control Panel > Instance Settings > Forms:

1. File extensions allowed to be used by Guest user (the allowed extensions should be inputted on a multi-line Text Field separated by comma, like pdf, ppt, etc). Ideally, we can use the Help Text below the setting to provide more info about how to input the file extensions, e.g. separating them by comma.
2. Maximum file size allowed to Guest user

Note: the settings' names are just suggestions, feel free to change it and double check with Russell, the Forms Tech Writer.