static path prefix fix to support non-root pywb deployment:

- store original wsgi SCRIPT_NAME (before collection path is pushed)
- add 'static_prefix' jinja env global which defaults to original prefix + /static/
- update existing templates to use '{{ static_prefix }}' instead of '{{ host_prefix }}/{{ static_path }''
- set 'pywb.host_prefix' via rewriterapp, set 'static_prefix' to absolute url if available (to support proxy mode)

pywb/apps/frontendapp.py

@@ -494,6 +494,9 @@ class FrontEndApp(object):
             # store original script_name (original prefix) before modifications are made
             environ['pywb.app_prefix'] = environ.get('SCRIPT_NAME', '')
 
+            # store original script_name (original prefix) before modifications are made
+            environ['ORIG_SCRIPT_NAME'] = environ.get('SCRIPT_NAME')
+
             lang = args.pop('lang', '')
             if lang:
                 pop_path_info(environ)

pywb/apps/rewriterapp.py

@@ -267,6 +267,8 @@ class RewriterApp(object):
             'pywb.static_prefix', '/static/')
         is_proxy = ('wsgiprox.proxy_host' in environ)
 
+        environ['pywb.host_prefix'] = host_prefix
+
         if self.use_js_obj_proxy:
             content_rw = self.js_proxy_rw
         else:

pywb/templates/head_insert.html

@@ -3,7 +3,7 @@
 {% set urlsplit = cdx.url | urlsplit %}
   wbinfo = {};
   wbinfo.top_url = "{{ top_url }}";
-{% if is_framed %}
+{% if is_framed == 'true' %}
   // Fast Top-Frame Redirect
   if (window == window.top && wbinfo.top_url) {
     var loc = window.location.href.replace(window.location.hash, "");