Recompile static assets

The Primer CSS-provided `tabnav` styles were not being used on the Edit
and Preview tabs on the create and edit pages.

After following Primer's documentation [1], it looks like we were using
the `aria-current` attribute incorrectly. Dynamically adding/removing
this attribute on the selected tab fixes the issue.

[1]: https://primer-css-git-next-inputs.primer.now.sh/css/components/navigation#tabnav

gollum.gemspec

@@ -5,8 +5,8 @@ Gem::Specification.new do |s|
   s.required_ruby_version = '>= 1.9'
 
   s.name              = 'gollum'
-  s.version           = '5.2.2'
-  s.date              = '2021-03-27'
+  s.version           = '5.2.1'
+  s.date              = '2021-02-25'
   s.license           = 'MIT'
 
   s.summary     = 'A simple, Git-powered wiki.'
@@ -69,11 +69,11 @@ Gem::Specification.new do |s|
     lib/gollum/app.rb
     lib/gollum/assets.rb
     lib/gollum/helpers.rb
-    lib/gollum/public/assets/.sprockets-manifest-de7bb79aec424e55af1acdcc4237b301.json
-    lib/gollum/public/assets/app-0fd228e26bfbe6fe31a2da268eb0e98e780c1191c1a918adf383377946e9c838.js
-    lib/gollum/public/assets/app-0fd228e26bfbe6fe31a2da268eb0e98e780c1191c1a918adf383377946e9c838.js.gz
-    lib/gollum/public/assets/app-ad43ca64b295d8444b10f22ee868f18429268af498f1bc515434878b690e37a2.css
-    lib/gollum/public/assets/app-ad43ca64b295d8444b10f22ee868f18429268af498f1bc515434878b690e37a2.css.gz
+    lib/gollum/public/assets/.sprockets-manifest-15b663a27211dc9de9a452b4b74462d7.json
+    lib/gollum/public/assets/app-7a0bbff2e8bad3033e7c17e0e0f886f336a9d23d3b912dcd2ae389c48b4b63e6.css
+    lib/gollum/public/assets/app-7a0bbff2e8bad3033e7c17e0e0f886f336a9d23d3b912dcd2ae389c48b4b63e6.css.gz
+    lib/gollum/public/assets/app-7a4bd115f4bc7ece39bc8073ca0ffad7c5e55cc5837b1464a12dead4905cefb2.js
+    lib/gollum/public/assets/app-7a4bd115f4bc7ece39bc8073ca0ffad7c5e55cc5837b1464a12dead4905cefb2.js.gz
     lib/gollum/public/assets/criticmarkup-31ae5d3282bbb8e7b7c3c9917e9fb68e3315a6b4a75da6cec48d21b8846905c4.css
     lib/gollum/public/assets/criticmarkup-31ae5d3282bbb8e7b7c3c9917e9fb68e3315a6b4a75da6cec48d21b8846905c4.css.gz
     lib/gollum/public/assets/editor-db10c8351306e92f1926ba225d0cd9c8e886482b3b9820a85825ec3abab5f1cf.js

lib/gollum.rb

@@ -12,11 +12,27 @@ require 'rhino' if RUBY_PLATFORM == 'java'
 require File.expand_path('../gollum/uri_encode_component', __FILE__)
 
 module Gollum
-  VERSION = '5.2.2'
+  VERSION = '5.2.1'
 
   def self.assets_path
     ::File.expand_path('gollum/public', ::File.dirname(__FILE__))
   end
+
+  class Error < StandardError;
+  end
+
+  class DuplicatePageError < Error
+    attr_accessor :dir
+    attr_accessor :existing_path
+    attr_accessor :attempted_path
+
+    def initialize(dir, existing, attempted, message = nil)
+      @dir            = dir
+      @existing_path  = existing
+      @attempted_path = attempted
+      super(message || "Cannot write #{@dir}/#{@attempted_path}, found #{@dir}/#{@existing_path}.")
+    end
+  end
   
   class TemplateFilter
     @@filters = {}

lib/gollum/views/layout.rb

@@ -47,7 +47,7 @@ module Precious
       end
 
       def mathjax_js
-        "#{page_route('gollum/assets/mathjax/MathJax.js')}?config=TeX-AMS-MML_HTMLorMML"
+        page_route("gollum/assets/mathjax/MathJax.js?config=TeX-AMS-MML_HTMLorMML")
       end
 
       def css # custom css

test/test_app.rb

@@ -953,7 +953,7 @@ context 'Frontend with base path' do
   test 'base path mathjax assets' do
     get '/wiki/Home'
     assert last_response.ok?
-    assert last_response.body.include?('<script defer src="/wiki/gollum/assets/mathjax/MathJax.js?config=')
+    assert last_response.body.include?('<script defer src="/wiki/gollum/assets/mathjax/MathJax.js')
   end
   
   test 'compare view' do