Change comments relation to use text data type for attribute text

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160510145341) do
+ActiveRecord::Schema.define(version: 20160512131539) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -31,7 +31,7 @@ ActiveRecord::Schema.define(version: 20160510145341) do
     t.string   "user_type"
     t.integer  "row"
     t.integer  "column"
-    t.string   "text"
+    t.text     "text"
     t.datetime "created_at"
     t.datetime "updated_at"
   end
@@ -92,8 +92,6 @@ ActiveRecord::Schema.define(version: 20160510145341) do
     t.boolean  "allow_file_creation"
   end
 
-  add_index "exercises", ["execution_environment_id"], name: "test3", using: :btree
-
   create_table "external_users", force: true do |t|
     t.integer  "consumer_id"
     t.string   "email"
@@ -204,9 +202,6 @@ ActiveRecord::Schema.define(version: 20160510145341) do
     t.string   "user_type"
   end
 
-  add_index "submissions", ["exercise_id"], name: "test1", where: "((user_type)::text = 'ExternalUser'::text)", using: :btree
-  add_index "submissions", ["exercise_id"], name: "test2", using: :btree
-
   create_table "teams", force: true do |t|
     t.string   "name"
     t.datetime "created_at"