hgweb: avoid invalid infinity scroll request when overwritten web.style

Infinity scroll is broken when you override the web.style in the following ways:

    $ hg --config='web.style=gitweb' serve
    $ open http://localhost:8080/shortlog?style=paper

ajaxScrollInit should use http://localhost:8080/shortlog/%next%?style=paper.
however, http://localhost:8080/shortlog/%next% is used actually.
It is missing style parameter.

This patch add style parameter to request url.

mercurial/hgweb/hgweb_mod.py

@@ -373,6 +373,7 b' class hgweb(object):'
                                              "motd": motd,
                                              "sessionvars": sessionvars,
                                              "pathdef": makebreadcrumb(req.url),
+                                             "style": style,
                                             })
         return tmpl
 

mercurial/hgweb/hgwebdir_mod.py

@@ -448,7 +448,9 b' class hgwebdir(object):'
                                              "logourl": logourl,
                                              "logoimg": logoimg,
                                              "staticurl": staticurl,
-                                             "sessionvars": sessionvars})
+                                             "sessionvars": sessionvars,
+                                             "style": style,
+                                             })
         return tmpl
 
     def updatereqenv(self, env):

mercurial/templates/paper/graph.tmpl

@@ -124,7 +124,7 b' graph.render(data);'
 
 <script type="text/javascript">
     ajaxScrollInit(
-            '{url|urlescape}graph/{rev}?revcount=%next%',
+            '{url|urlescape}graph/{rev}?revcount=%next%&style={style}',
             {revcount}+60,
             function (htmlText, previousVal) \{ return previousVal + 60; },
             '#wrapper',

mercurial/templates/paper/shortlog.tmpl

@@ -73,7 +73,7 b''
 
 <script type="text/javascript">
     ajaxScrollInit(
-            '{url|urlescape}shortlog/%next%',
+            '{url|urlescape}shortlog/%next%{sessionvars%urlparameter}',
             '{nextentry%"{node}"}', <!-- NEXTHASH
             function (htmlText, previousVal) \{
                 var m = htmlText.match(/'(\w+)', <!-- NEXTHASH/);

tests/test-hgweb-empty.t

@@ -361,7 +361,7 b' Some tests for hgweb in an empty reposit'
   
   <script type="text/javascript">
       ajaxScrollInit(
-              '/graph/-1?revcount=%next%',
+              '/graph/-1?revcount=%next%&style=paper',
               60+60,
               function (htmlText, previousVal) { return previousVal + 60; },
               '#wrapper',