updateContest and removeContestLogo functions

dbContest.js

@@ -11,6 +11,9 @@ module.exports = function (Contest) {
 		addContest : function(courseId, name, info, description, start, finish, meta) {
 		    return dbUtils.dbCreateItem(Contest,{ course: courseId, name: name, info: info, description: description, start : start, finish : finish, meta : meta});
 		},
+		updateContest : function(contestId, name, info, description, start, finish) {
+			return dbUtils.dbFindOneAndUpdate(Contest,{_id : contestId},{ name: name, info: info, description: description, start : start, finish : finish});
+		},
 		getContestById : function (contestId) {
 			return dbUtils.dbFindOne(Contest, {_id: contestId}, [{ path: 'course' }]);
 		},

file.js

@@ -12,6 +12,9 @@ module.exports = function (gfs) {
 		getCourseLogo : function(courseId) {
 			return dbUtils.readFileToBuffer(gfs, courseId.toString() + '/logo.png' );
 		},
+		removeContestLogo : function(contestId) {
+			return dbUtils.removeFile(gfs, contestId.toString() + '/logo.png' );
+		},
 		saveContestLogo : function(path, contestId) {
 			return dbUtils.copyFileToGridFS(gfs, path, contestId.toString() + '/logo.png' );
 		},

models/Contest.js

@@ -30,17 +30,17 @@ var ContestSchema = new mongoose.Schema({
     created: {
         type: Date,
         default: Date.now,
-        required: true,
+        required: true
     },
     start: {
         type: Date,
         default: Date.now,
-        required: true,
+        required: true
     },
     finish: {
         type: Date,
         default: Date.now,
-        required: true,
+        required: true
     },
     meta: {
         type: {},

models/Course.js

@@ -30,7 +30,7 @@ var CourseSchema = new mongoose.Schema({
     created: {
         type: Date,
         default: Date.now,
-        required: true,
+        required: true
     }
 });
 

models/Program.js

@@ -17,7 +17,7 @@ var ProgramSchema = new mongoose.Schema({
     testProgramId : {
         type: mongoose.Schema.Types.ObjectId,
         required: true
-    },
+    }
 });
 
 module.exports = ProgramSchema;
\ No newline at end of file

models/Task.js

@@ -35,7 +35,7 @@ var TaskSchema = new mongoose.Schema({
     created: {
         type: Date,
         default: Date.now,
-        required: true,
+        required: true
     },
 
     meta: {