[Refactor] Rename the app module to calsocial

Just for clarity

calsocial/forms.py

@@ -0,0 +1,30 @@
+from flask_babel import lazy_gettext as _
+from flask_wtf import FlaskForm
+from wtforms import PasswordField, StringField, BooleanField
+from wtforms.ext.dateutil.fields import DateTimeField
+from wtforms.validators import DataRequired, Email, ValidationError
+from wtforms.widgets import TextArea
+
+
+class RegistrationForm(FlaskForm):
+    username = StringField(_('Username'), validators=[DataRequired()])
+    email = StringField(_('Email address'), validators=[Email()])
+    password = PasswordField(_('Password'), validators=[DataRequired()])
+    password_retype = PasswordField(_('Password, once more'), validators=[DataRequired()])
+
+    def validate_password_retype(self, field):
+        if field.data != self.password.data:
+            raise ValidationError(_('The two passwords must match!'))
+
+
+class EventForm(FlaskForm):
+    title = StringField(_('Title'), validators=[DataRequired()])
+    time_zone = StringField(_('Time zone'), validators=[DataRequired()])
+    start_time = DateTimeField(_('Start time'), validators=[DataRequired()])
+    end_time = DateTimeField(_('End time'), validators=[DataRequired()])
+    all_day = BooleanField(_('All day'))
+    description = StringField(_('Description'), widget=TextArea())
+
+    def validate_end_time(self, field):
+        if field.data < self.start_time.data:
+            raise ValidationError(_('End time must be later than start time!'))