Raven: revert previous commit and move raven first

Moves galaxy.panels.mako's import of Raven back to vanilla script
tag and before the requirejs library import, allowing Raven's UMD
to define Raven as a global.

This starts Raven/sentry *before* the library package is loaded so that
library errors can be captured as well.

templates/webapps/galaxy/galaxy.panels.mako

@@ -52,6 +52,16 @@
 </%def>
 
 <%def name="javascripts()">
+    ## Send errors to Sentry server if configured
+    %if app.config.sentry_dsn:
+        ${h.js( "libs/raven" )}
+        <script>
+            Raven.config('${app.config.sentry_dsn_public}').install();
+            %if trans.user:
+                Raven.setUser( { email: "${trans.user.email | h}" } );
+            %endif
+        </script>
+    %endif
 
     ## load jscript libraries
     ${h.js(
@@ -80,16 +90,6 @@
             },
         });
 
-        // send errors to Sentry server if configured
-        %if app.config.sentry_dsn:
-            require([ 'libs/raven' ], function( Raven ){
-                Raven.config( '${app.config.sentry_dsn_public}' ).install();
-                %if trans.user:
-                    Raven.setUser({ email: "${trans.user.email|h}" });
-                %endif
-            });
-        %endif
-
         // console protection
         // TODO: Only needed for IE <9 which I believe we dropped
         window.console = window.console || {