removing id property form Activity.
implement get rating API.
fixing advanced search
adding sorting for store
Merge pull request #46 from splinter/master

STORE-122 and 184
SSO app refactoring
adding fix for recently added asset list
implementing sorting.
implementing sort by popular.
Sort is fixed with using AM generic API
resolving merge conflict of create.asset.js
Merge branch 'master' of github.com:wso2/enterprise-store
fixing Sort in publisher
Resolving STORE-228
Merge branch 'master' of github.com:wso2/enterprise-store
login after register
Merge branch 'master' of https://github.com/wso2/enterprise-store
text refac
fixing STORE-219.
Merge remote-tracking branch 'origin/master'