new color palette for NE-Tags

based on [Wong, 2011](https://www.nature.com/articles/nmeth.1618)

neath.html

@@ -14,24 +14,24 @@
         body{font-family:Verdana;font-size:16px}
         table{table-layout:fixed;width:100%;text-align:center}
         th{background-color:lightgray}
-        .editable:focus{background-color:yellow}
+        .editable:focus{background-color:#f0e442}
-        tr:focus-within{background-color:whitesmoke}
+        tr:focus-within{background-color:#dddddd}
 
         .accordion:hover .accordion-item:hover .accordion-item-content,
 		.accordion .accordion-item--default .accordion-item-content{height:10.5em}
 		.accordion-item-content, .accordion:hover .accordion-item-content{height:0;overflow:hidden;transition:height.25s}
 		.accordion{padding:0;margin:auto;width:100px}
-		.accordion-item:hover{background-color:yellow}
+		.accordion-item:hover{background-color:#f0e442}
 
-        .type_select:hover{background-color:yellow}
+        .type_select:hover{background-color:#f0e442}
 
-        .ner_per{background-color:skyblue}
+        .ner_per{background-color:#56b3e9}
-        .ner_loc{background-color:goldenrod}
+        .ner_loc{background-color:#e69d00}
-        .ner_org{background-color:plum}
+        .ner_org{background-color:#cc79a7}
-        .ner_work{background-color:lightgreen}
+        .ner_work{background-color:#009e74}
-        .ner_conf{background-color:olive}
+        .ner_conf{background-color:#aaaa00}
-        .ner_evt{background-color:lavender}
+        .ner_evt{background-color:#0072b2}
-        .ner_todo{background-color:turquoise}
+        .ner_todo{background-color:#d55e00}
 
         .fit-image{
             width: 100%;
@@ -55,7 +55,7 @@
         <div class="col-9">
             <div class="row">
                 <div class="col text-center">
-                    <h3><a href="https://github.com/qurator-spk/neath" target="_blank" tabindex="-1">neath</a>: named entity annotation tool in html</h3>
+                    <h3><a href="https://github.com/qurator-spk/neath" target="_blank" tabindex="-1">neath</a>: named entity annotation tool</h3>
                     <a href="https://github.com/qurator-spk/neath/blob/master/User_Guide.md" target="_blank"  tabindex="-1">User Guide</a> | <a href="https://github.com/qurator-spk/neath/blob/master/Annotation_Guidelines.pdf" target="_blank" tabindex="-1">Annotation Guidelines</a> | <a href="https://github.com/qurator-spk/neath/issues" target="_blank" tabindex="-1">Issues</a><hr>
                 </div>
             </div>
@@ -70,7 +70,7 @@
             </a>
         </div>
         <div class="col-8 text-center" id="tableregion">
-            Please upload a TSV file:
+            Please upload a TSV<sup>(<a href="https://github.com/qurator-spk/neath/blob/master/User_Guide.md#22-data-format">i</a>)</sup> file:
             <br><br>
             <input type="file" id="tsv-file" name="files"/>
         </div>