Add frontend for uploading stuff

src/main/resources/httpd/schematic_download.html

@@ -53,7 +53,7 @@
     <h5>A list of schematics is below. You can click on the schematic name to download it.</h5>
     <div class="input-group mb-3 w-75 p-3">
         <input type="text" autocomplete="off" class="form-control" oninput="filterTable(this.value)"
-               placeholder="Search for a schematic... ">
+               placeholder="Search for a schematic...">
     </div>
     <table id="schemList" class="table table-striped table-bordered">
         <thead>