support the direct path to a clsi output file /project/project_id/build/build_id/output/*

this avoids use of the query string ?build=... and so we can match the
url directly with the nginx location directive

services/web/app/coffee/Features/Compile/CompileController.coffee

@@ -93,7 +93,12 @@ module.exports = CompileController =
 
 	getFileFromClsi: (req, res, next = (error) ->) ->
 		project_id = req.params.Project_id
-		CompileController.proxyToClsi(project_id, "/project/#{project_id}/output/#{req.params.file}", req, res, next)
+		build = req.params.build
+		if build?
+			url = "/project/#{project_id}/build/#{build}/output/#{req.params.file}"
+		else
+			url = "/project/#{project_id}/output/#{req.params.file}"
+		CompileController.proxyToClsi(project_id, url, req, res, next)
 
 	proxySync: (req, res, next = (error) ->) ->
 		CompileController.proxyToClsi(req.params.Project_id, req.url, req, res, next)

services/web/app/coffee/router.coffee

@@ -113,6 +113,17 @@ module.exports = class Router
 				req.params = params
 				next()
 			), AuthorizationMiddlewear.ensureUserCanReadProject, CompileController.getFileFromClsi
+		# direct url access to output files for a specific build (query string not required)
+		webRouter.get  /^\/project\/([^\/]*)\/build\/([0-9a-f-]+)\/output\/(.*)$/,
+			((req, res, next) ->
+				params =
+					"Project_id": req.params[0]
+					"build":      req.params[1]
+					"file":       req.params[2]
+				req.params = params
+				next()
+			), AuthorizationMiddlewear.ensureUserCanReadProject, CompileController.getFileFromClsi
+
 		webRouter.delete "/project/:Project_id/output", AuthorizationMiddlewear.ensureUserCanReadProject, CompileController.deleteAuxFiles
 		webRouter.get "/project/:Project_id/sync/code", AuthorizationMiddlewear.ensureUserCanReadProject, CompileController.proxySync
 		webRouter.get "/project/:Project_id/sync/pdf", AuthorizationMiddlewear.ensureUserCanReadProject, CompileController.proxySync