Links the following entries in gadget definitions to the associated page:
- scripts
- styles
- datas
- peers
- dependencies (only when they are also a gadget)
- category (links to MW message page)
- messages
unserialize(serialize()) hack is a bit ugly, but it works.
Co-Authored-By: Siddharth VP <siddharthvp@gmail.com>
Bug: T298844
Change-Id: I9154f600997fe693410e7560ed30732102b806aa
