Add an advanced search form to /search, in template and route
Modify Tantivy schema, add new tokenizer for some properties
Create new String query parser
Create Tantivy query AST from our own
Add default fields for search
Add new routes and templates for search and result
Implement FromFormValue for Page to reuse it on search result pagination
Add optional query parameters to paginate template's macro
Update to newer rocket_csrf, don't get csrf token on GET forms
Implement indexaction on insert, update and delete
Modify func args to get the indexer where required
Add subcommand to initialise, refill and unlock search db