add ability to remove user and add task depndencies closes #69

sql/models.sql

@@ -10,13 +10,14 @@ create table if not exists models (
     -- -1: failed preparing
     -- 1: preparing
     status integer default 1,
-    
+
     -- Types:
     -- 0: Unset
     -- 1: simple
     -- 2: expandable
     model_type integer default 0,
 
+    can_train integer default 1,
     width integer,
     height integer,
     color_mode varchar (20),
@@ -51,7 +52,7 @@ create table if not exists model_data_point (
     status_message text
 );
 
--- drop table if exists model_definition; 
+-- drop table if exists model_definition;
 create table if not exists model_definition (
     id uuid primary key default gen_random_uuid(),
     model_id uuid references models (id) on delete cascade,
@@ -82,10 +83,10 @@ create table if not exists model_definition_layer (
     -- ei 28,28,1
     -- a 28x28 grayscale image
     shape text not null,
-    
+
     -- Type based on the expandability
     -- 0: not expandalbe model
-    -- 1: fixed 
+    -- 1: fixed
     -- 2: head
     exp_type integer default 0
 );
@@ -111,4 +112,3 @@ create table if not exists exp_model_head (
     created_on timestamp default current_timestamp,
     epoch_progress integer default 0
 );
-