PW-622 Use column in materials table for getting prices

Squashed commit of the following:

commit 801333b25a635c5fce12d937d6808894ef2475d3
Author: Martin <me.carlsson@gmail.com>
Date:   Tue Jan 3 10:59:45 2017 +0100

    PW-622 divide by float

commit 9e2c696751c28c017bcb452ea4349509ca787fd9
Author: Martin <me.carlsson@gmail.com>
Date:   Mon Jan 2 13:46:57 2017 +0100

    PW-622 use new material_price column

api/lib/prices.py

@@ -7,7 +7,7 @@ from api.lib.limits import calculate_canvas_limits
 
 def m2_price(material, market, designer=None, reseller=None, inquiry=None, rounded=True, inc_vat=True):
     """ calculates price per square meter """
-    price = material.price
+    price = material.price / 100.0
 
     if designer:
         price *= (float(designer.pricepremium) / 100) + 1

api/models/product.py

@@ -43,18 +43,8 @@ class Material(db.Model):
 
     id = db.Column('materialid', db.Integer, primary_key=True)
     name = db.Column('material', db.String(255), nullable=False)
-    material_price = db.relationship('MaterialPrice', uselist=False)
+    price = db.Column('price', db.Integer)
 
-    @property
-    def price(self):
-        if self.material_price is not None:
-            return float(self.material_price.price)
-        return None
-
-    @price.setter
-    def price(self, value):
-        if self.material_price:
-            self.material_price.price = value
 
     def to_json(self):
         return {
@@ -64,16 +54,4 @@ class Material(db.Model):
         }
 
     def __repr__(self):
-        return self.name
-
-
-class MaterialPrice(db.Model):
-
-    __tablename__ = 'v_materialprice'
-
-    groupid = db.Column(db.Integer)
-    materialid = db.Column(db.Integer, db.ForeignKey(
-        'product-materials.materialid'))
-    price = db.Column(db.Numeric)
-
-    __table_args__ = (db.PrimaryKeyConstraint(groupid, materialid),)
+        return self.name