lk | remove unused fields on bikes & fix some formatting

db/migrate/20150918220734_remove_unused_bike_fields.rb

@@ -0,0 +1,6 @@
+class RemoveUnusedBikeFields < ActiveRecord::Migration
+  def change
+    remove_column :bikes, :work_done
+    remove_column :bikes, :new_parts
+  end
+end

db/migrate/20150918220913_remove_unused_client_fields.rb

@@ -0,0 +1,5 @@
+class RemoveUnusedClientFields < ActiveRecord::Migration
+  def change
+    remove_column :clients, :weight
+  end
+end

db/migrate/20150918221119_update_bike_field_names.rb

@@ -0,0 +1,6 @@
+class UpdateBikeFieldNames < ActiveRecord::Migration
+  def change
+    rename_column :bikes, :notes, :work_done
+    rename_column :bikes, :tag_info, :new_parts
+  end
+end