hgweb: consistent author name width

Paper & coal use a sligtly shorter name length of 12em in the log view
than gitweb's 15em. Names too long for 12em is not entirely unheard
of, and hence increasing the length is appropriate; hgweb should
remain usable on 1024x768.

mercurial/templates/static/style-coal.css

@@ -191,7 +191,7 b' h3 {'
 }
 .bigtable tr { border: none; }
 .bigtable .age { width: 6em; }
-.bigtable .author { width: 12em; }
+.bigtable .author { width: 15em; }
 .bigtable .description { }
 .bigtable .description .base { font-size: 70%; float: right; line-height: 1.66; }
 .bigtable .node { width: 5em; font-family: monospace;}

mercurial/templates/static/style-paper.css

@@ -188,7 +188,7 b' h3 {'
 }
 .bigtable tr { border: none; }
 .bigtable .age { width: 7em; }
-.bigtable .author { width: 12em; }
+.bigtable .author { width: 15em; }
 .bigtable .description { }
 .bigtable .description .base { font-size: 70%; float: right; line-height: 1.66; }
 .bigtable .node { width: 5em; font-family: monospace;}