Remove default width of page name header.
fix xss vulnerability in mathjax parsing
ruby1.8 compatibility isn't required to run gollum using ruby 1.8.7

The sanitize gem requires 1.8.7 or later, so compatibility with earlier versions is moot
Updated the gemspec.

Commit df505a72899f4d0d9ed30131b030d465b2a748ae removed ruby1.8.rb but it was still included in the gemspec which caused Bundler to complain about an invalid Gemspec.

*NOTE* There are five test failures when running 'rake'.  I checked out the last commit before Tom's change (d3594f6652384e5eadfe1378e81eb780b1cd0550) and that also has these five failures so I'm happy that we didn't introduce them.
Merged pull request #136 from freerange/master.

Remove redundant 1.8 compatibilty
Merged pull request #134 from mrjbq7/master.

Fixing search box location.
Merge branch 'master' of github.com:github/gollum
Release 1.3.0
Fixed spelling.
allow @id attributes but force a "wiki-" prefix
Merge pull request #146 from schuyler1d/master

allow prefixed @id attributes to allow internal linking
Added support for activate/deactivate functions in LanguageDefinition so that languages that have a client-side component can setup and teardown UI elements.
default_executable= have been deprecated
Merge pull request #153 from guilleiguaran/patch-1

default_executable= have been deprecated
Fixed broken preview functionality in Gollum.
Added spacing to allow has-rightbar and has-footer classes to work
Remove edit button on preview pages
add test that fails when editing pages while using page_file_dir
fix bug where can't edit pages while using page_file_dir
Merge pull request #169 from JoshCheek/fix_page_file_dir_option

Fix page_file_dir option