Reduce magical code for squeezed url

Add method to obtain non-squeezed URL from request path.
add js namespace define file
move window.LDR_VARS to LDR.VARS
add LDR namespace prefix to pref.js config params
move proto to lib/utils
add spec: ApplicationController#url_from_path
Refactor views
Merge pull request #63 from mzp/magical_code_for_squeezed_url

Reduce magical code for squeezed url
Merge pull request #64 from mizchi/js-namespaced

initialize js namespace as LDR and refactor prefs
fix keyconfig on windows
Merge pull request #67 from mizchi/fix-keyconfig

fix keyconfig on firefox-win
Merge remote-tracking branch 'ykzts/refactor-views'

Conflicts:
	config/routes.rb
Remove Language global variable
Merge pull request #68 from ykzts/remove-language-global-variable

Remove Language global variable