3.1.5/bug fix custom deposit

[leefrank9527]

Add additional configuration for the custom deposit forms:

1. Made the URL configurable for submit the custom deposit form. The new configuration item is located in application.properties of Store:

   # URLs that Users would use to submit the custom deposit form from browsers for
   # each of the target types, separated by comma.
   # A note on the format of this URL:
   # - If the User's Browser and WCT Digital Asset Store are deployed in the same machine(usually for DEV or Test scenarios), the default value can be used.
   # - If it is deployed behind a Fire Wall or Reverse Proxy, use the URL exposed from the Fire Wall or Reverse Proxy.
   dpsArchive.htmlSerials.customDepositFormSubmitURLs=http://localhost:${server.port}

2. WebApp will fetch the customDepositFormSubmitURLs from Store and populate that into the custom deposit form for submitting the form to Store.

[obrienben]

Tested and confirmed works as expected