corrected some spec dependencies

spec/couchrest/more/casted_model_spec.rb

@@ -70,6 +70,7 @@ describe CouchRest::CastedModel do
   
   describe "saved document with casted models" do
     before(:each) do
+      reset_test_db!
       @obj = DummyModel.new(:casted_attribute => {:name => 'whatever'})
       @obj.save.should be_true
       @obj = DummyModel.get(@obj.id)

spec/couchrest/more/extended_doc_attachment_spec.rb

@@ -4,6 +4,7 @@ describe "ExtendedDocument attachments" do
   
   describe "#has_attachment?" do
     before(:each) do
+      reset_test_db!
       @obj = Basic.new
       @obj.save.should == true
       @file = File.open(FIXTURE_PATH + '/attachments/test.html')

spec/couchrest/more/extended_doc_view_spec.rb

@@ -190,6 +190,7 @@ describe "ExtendedDocument views" do
 
   describe "with a lot of designs left around" do
     before(:each) do
+      reset_test_db!
       Article.by_date
       Article.view_by :field
       Article.by_field

spec/couchrest/more/property_spec.rb

@@ -8,6 +8,7 @@ require File.join(FIXTURE_PATH, 'more', 'event')
 describe "ExtendedDocument properties" do
   
   before(:each) do
+    reset_test_db!
     @card = Card.new(:first_name => "matt")
   end