Update compiler and task schema

compiler.js

@@ -11,6 +11,9 @@ const CompilerSchema = new mongoose.Schema({
         type: String,
         required: true
     },
+    languageTheme: {
+        type: String
+    },
     isProject: {
         type: Boolean,
         required: true

task.js

@@ -67,16 +67,26 @@ const TaskSchema = new mongoose.Schema({
             error: {type: Boolean, default: true}
         },
         compilers: {
-            type: [{
-                compiler: {
+            type: Map,
+            of: {
+                patternFile: {
+                    type: mongoose.Schema.Types.ObjectId
+                },
+                sampleFile: {
+                    type: mongoose.Schema.Types.ObjectId
+                },
+                compileFile: {
+                    type: mongoose.Schema.Types.ObjectId
+                },
+                arguments: {
                     type: String,
                     required: true
                 },
-                arguments: {
-                    type: String
+                compileProjectFileName: {
+                    type: String,
                 }
-            }],
-            default: []
+            },
+            default: {}
         },
         cpuTimeLimit: {
             type: Number,
@@ -86,19 +96,6 @@ const TaskSchema = new mongoose.Schema({
             type: String,
             default: '64K'
         },
-        compileFile: {
-            type: mongoose.Schema.Types.ObjectId,
-            refs: 'fs'
-        },
-        compileProjectFileName: {
-            type: String,
-        },
-        patternFile: {
-            type: mongoose.Schema.Types.ObjectId
-        },
-        sampleFile: {
-            type: mongoose.Schema.Types.ObjectId
-        },
         testingType: {
             type: String,
             default: defines.TESTER_TYPE.TEXT_COMPARE