Cleanup spec/support folder and spec/spec_helper

Changes:
* Move spec/monkeypatch to spec/support
* Remove unused support/shared_examples
* Move support/api to support/api_helpers to match module name
* Move support/login to support/login_helpers to match module name
* Move API specs to requests/api (convention over configuration)
* Remove unused support/js_patch
* Simplify login_as helper
* Move DatabaseCleaner stuff to its own support file
* Remove unnecessary configuration and requires from spec_helper

spec/requests/api/users_spec.rb

@@ -0,0 +1,37 @@
+require 'spec_helper'
+
+describe Gitlab::API do
+  let(:user) { Factory :user }
+
+  describe "GET /users" do
+    it "should return authentication error" do
+      get "#{api_prefix}/users"
+      response.status.should == 401
+    end
+
+    describe "authenticated GET /users" do
+      it "should return an array of users" do
+        get "#{api_prefix}/users?private_token=#{user.private_token}"
+        response.status.should == 200
+        json_response.should be_an Array
+        json_response.first['email'].should == user.email
+      end
+    end
+  end
+
+  describe "GET /users/:id" do
+    it "should return a user by id" do
+      get "#{api_prefix}/users/#{user.id}?private_token=#{user.private_token}"
+      response.status.should == 200
+      json_response['email'].should == user.email
+    end
+  end
+
+  describe "GET /user" do
+    it "should return current user" do
+      get "#{api_prefix}/user?private_token=#{user.private_token}"
+      response.status.should == 200
+      json_response['email'].should == user.email
+    end
+  end
+end