Added error checking on creation of .css

Signed-off-by: James Ketrenos <james.p.ketrenos@intel.com>
Added error checking on creation of menus.js and xwalk.css

Signed-off-by: James Ketrenos <james.p.ketrenos@intel.com>
Added wiki/history

Signed-off-by: James Ketrenos <james.p.ketrenos@intel.com>
Added wiki/custom.js to be tracked by website vs. gollum

Signed-off-by: James Ketrenos <james.p.ketrenos@intel.com>
Fixed gfm.php to generate History with links to pages

Signed-off-by: James Ketrenos <james.p.ketrenos@intel.com>