feat(dashboard): the UGC page replaces UGC Search

The UGC Search page and the UGC page searched the same things (owner,
account, property, the name and description a player gave a model, LOT,
UGC / blueprint id) with the same SQL. The UGC page's lists are now the
one search:

- models' List view has a Where column: placed on a property (with the
  name given there and a link to the model in the property's 3D view),
  in a mail or in the creator's inventories, or not found
  (/api/ugc?where=1, UgcLinks::Whereabouts as before)
- owners link to their character and, with accounts_view, account
- while searching, the kind buttons say how many models and how many
  cars and rockets match (/api/ugc "matches")
- /ugc_search?q= redirects to /ugc?view=list&q=; the menu's UGC Search
  entry is now UGC, which opens the UGC page (it was only under Server
  Admin, for ugc_manage)
- References lose their Find button (Where it is has the same) and name
  the inventory a build is in

The ugc-search page and script are removed; /api/ugc_links/search stays
for API users.

Check: the menu's UGC entry; an old /ugc_search?q= link opens the UGC
list with the search filled in; owner:, account:, property:, name:,
lot: and id: searches, and the counts on the kind buttons; the Where
column's links (property, 3D, character, account).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

dDashboardServer/templates/ugc.jinja2

@@ -8,7 +8,8 @@
 		<h2 class="mb-1">UGC Server</h2>
 		<p class="text-body-secondary mb-0">The UGC server makes a mesh and an icon for every model players build, and icons for their cars and rockets,
 			and serves them to the game client. New and changed models are picked up by themselves; a model that fails is tried a few times, then left
-			as failed until it's made again from here. See <code>docs/UgcServer.md</code>.</p>
+			as failed until it's made again from here. The search finds creations by owner, account, property, the name players gave them, LOT or id,
+			and the List view says where each one is. See <code>docs/UgcServer.md</code>.</p>
 	</div>
 
 	<div class="row g-2 mb-3" id="counts"></div>
@@ -75,7 +76,7 @@
 	<div id="gallery" class="ugc-gallery mb-2"></div>
 	<div class="card d-none" id="listCard"><div class="card-body p-2">
 		<div id="modelTableBox"><table class="table table-sm align-middle mb-0 w-100 table-stack" id="ugcModelTable">
-			<thead><tr><th>Icon</th><th>ID</th><th>Owner</th><th>State</th><th>Made</th><th>Took</th><th>CPU</th><th>RAM (est.)</th><th>Saved</th><th>Size</th><th>File</th><th></th></tr></thead></table></div>
+			<thead><tr><th>Icon</th><th>ID</th><th>Owner</th><th>State</th><th>Made</th><th>Took</th><th>CPU</th><th>RAM (est.)</th><th>Saved</th><th>Size</th><th>File</th><th>Where</th><th></th></tr></thead></table></div>
 		<div id="assemblyTableBox" class="d-none"><table class="table table-sm align-middle mb-0 w-100 table-stack" id="ugcAssemblyTable">
 			<thead><tr><th>Icon</th><th>ID</th><th>Owner</th><th>State</th><th>Made</th><th>Took</th><th>CPU</th><th>RAM (est.)</th><th>Size</th><th>File</th><th>Where</th><th></th></tr></thead></table></div>
 	</div></div>
@@ -172,7 +173,7 @@
 					<div class="card-header py-2 small fw-semibold d-flex flex-wrap align-items-center gap-2">References <span class="text-body-secondary fw-normal">the builds that use these modules</span>
 						<input type="search" class="form-control form-control-sm ms-auto" style="max-width: 16rem" id="refSearch" placeholder="Owner, account, property or id" aria-label="Search the builds"></div>
 					<div class="card-body p-2"><table class="table table-sm small align-middle mb-0 w-100" id="refTable">
-						<thead><tr><th>Build (blueprint id)</th><th>Owner</th><th>Account</th><th>State</th><th>Made</th><th>Where it is</th><th></th></tr></thead></table></div>
+						<thead><tr><th>Build (blueprint id)</th><th>Owner</th><th>Account</th><th>State</th><th>Made</th><th>Where it is</th></tr></thead></table></div>
 				</div>
 			</div>
 		</div></div>