Update iviewer to latest version and optimise repo

.drone.yml

@@ -18,7 +18,7 @@ steps:
         from_secret: mattermost_nightly_hook
     commands:
       - mkdir build
-      - cp -r -v archived.html css/ images/ img/ js/ index.html results.html robots.txt 403.html 404.html .htaccess ./build
+      - cp -r -v archived.html css/ fonts/ images/ js/ index.html results.html robots.txt 403.html 404.html .htaccess ./build .well-known/
       - mkdir -p ~/.ssh
       - eval $(ssh-agent -s)
       - echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config
@@ -143,6 +143,6 @@ trigger:
 
 ---
 kind: signature
-hmac: a002e30e04f1c87e97ac1d7ca091e3a71f5d958b15cb162c91a2e6200701f48b
+hmac: effbd7d9d4bcc398c1bbbeb859ee869432f0c2efec2c4601e0424143bbeef3f4
 
 ...

css/jquery.iviewer.css

@@ -7,11 +7,11 @@
 }
 
 .iviewer_cursor {
-    cursor: url(../img/iviewer/hand.cur) 6 8, pointer;
+    cursor: url(../images/hand.cur) 6 8, pointer;
 }
 
 .iviewer_drag_cursor {
-    cursor: url(../img/iviewer/grab.cur) 6 8, pointer;
+    cursor: url(../images/grab.cur) 6 8, pointer;
 }
 
 .iviewer_button {
@@ -23,22 +23,22 @@
 
 .iviewer_zoom_in {
     left: 20px;
-    background: url(../img/iviewer/iviewer.zoom_in.png);
+    background: url(../images/iviewer.zoom_in.png);
 }
 
 .iviewer_zoom_out {
     left: 55px;
-    background: url(../img/iviewer/iviewer.zoom_out.png);
+    background: url(../images/iviewer.zoom_out.png);
 }
 
 .iviewer_zoom_zero {
     left: 90px;
-    background: url(../img/iviewer/iviewer.zoom_zero.png);
+    background: url(../images/iviewer.zoom_zero.png);
 }
 
 .iviewer_zoom_fit {
     left: 125px;
-    background: url(../img/iviewer/iviewer.zoom_fit.png);
+    background: url(../images/iviewer.zoom_fit.png);
 }
 
 .iviewer_zoom_status {
@@ -52,20 +52,20 @@
 
 .iviewer_rotate_left {
     left: 227px;
-    background: #fff url(../img/iviewer/iviewer.rotate_left.png) center center no-repeat;
+    background: #fff url(../images/iviewer.rotate_left.png) center center no-repeat;
 }
 
 .iviewer_rotate_right {
     left: 262px;
-    background: #fff url(../img/iviewer/iviewer.rotate_right.png) center center no-repeat;
+    background: #fff url(../images/iviewer.rotate_right.png) center center no-repeat;
 }
 
 .viewer
 {
     width:      100%;
     height:     500px;
     position:   relative;
-    background: transparent url('../img/loader.gif') no-repeat center center;
+    background: transparent url('../images/loader.gif') no-repeat center center;
 }
 
 .viewer img