Fix deprecation warning, rename Form to FlaskForm

Starting with flask_wtform version 1.0, Form will be dropped in favor
of FlaskForm.

pillar/web/nodes/forms.py

@@ -4,7 +4,7 @@ from datetime import datetime
 from datetime import date
 import pillarsdk
 from flask import current_app
-from flask_wtf import Form
+from flask_wtf import FlaskForm
 from wtforms import StringField
 from wtforms import DateField
 from wtforms import SelectField
@@ -110,7 +110,7 @@ def get_node_form(node_type):
     :param node_type: Describes the node type via dyn_schema, form_schema and
     parent
     """
-    class ProceduralForm(Form):
+    class ProceduralForm(FlaskForm):
         pass
 
     parent_prop = node_type['parent']

pillar/web/projects/forms.py

@@ -1,4 +1,4 @@
-from flask_wtf import Form
+from flask_wtf import FlaskForm
 from wtforms import StringField
 from wtforms import BooleanField
 from wtforms import HiddenField
@@ -12,7 +12,7 @@ from pillar.web import system_util
 from pillar.web.utils.forms import FileSelectField, JSONRequired
 
 
-class ProjectForm(Form):
+class ProjectForm(FlaskForm):
     project_id = HiddenField('project_id', validators=[DataRequired()])
     name = StringField('Name', validators=[DataRequired()])
     url = StringField('Url', validators=[DataRequired()])
@@ -32,7 +32,7 @@ class ProjectForm(Form):
     picture_square = FileSelectField('Picture square', file_format='image')
 
     def validate(self):
-        rv = Form.validate(self)
+        rv = FlaskForm.validate(self)
         if not rv:
             return False
 
@@ -54,7 +54,7 @@ class ProjectForm(Form):
         return True
 
 
-class NodeTypeForm(Form):
+class NodeTypeForm(FlaskForm):
     project_id = HiddenField('project_id', validators=[DataRequired()])
     name = StringField('Name', validators=[DataRequired()])
     parent = StringField('Parent')

pillar/web/users/forms.py

@@ -1,5 +1,5 @@
 from flask_login import current_user
-from flask_wtf import Form
+from flask_wtf import FlaskForm
 from pillar.web import system_util
 from pillarsdk.users import User
 
@@ -14,7 +14,7 @@ from wtforms.validators import Regexp
 import wtforms.validators as wtvalid
 
 
-class UserLoginForm(Form):
+class UserLoginForm(FlaskForm):
     username = StringField('Username', validators=[DataRequired()])
     password = PasswordField('Password', validators=[DataRequired()])
     remember_me = BooleanField('Remember Me')
@@ -23,7 +23,7 @@ class UserLoginForm(Form):
         super(UserLoginForm, self).__init__(csrf_enabled=False, *args, **kwargs)
 
 
-class UserProfileForm(Form):
+class UserProfileForm(FlaskForm):
     username = StringField('Username', validators=[DataRequired(), Length(
         min=3, max=128, message="Min. 3, max. 128 chars please"), Regexp(
         r'^[\w.@+-]+$', message="Please do not use spaces")])
@@ -52,7 +52,7 @@ class UserProfileForm(Form):
         return True
 
 
-class UserSettingsEmailsForm(Form):
+class UserSettingsEmailsForm(FlaskForm):
     choices = [
         (1, 'Keep me updated with Blender Cloud news.'),
         (0, 'Do not mail me news update.')]
@@ -74,7 +74,7 @@ class RolesField(SelectMultipleField):
         return current_app.user_roles
 
 
-class UserEditForm(Form):
+class UserEditForm(FlaskForm):
     roles = RolesField('Roles')
     email = StringField(
         validators=[wtvalid.DataRequired(), wtvalid.Email()],