feat(CosmosPackagesStores): improvements to package detail version This is a refactor based on the work where `cosmosPackage.currentVersion = cosmosPackage.version;` was removed from `fetchPackageDescription` action which introduced some code refactoring.
feat(CosmosPackagesStores): improvements to package detail version
This is a refactor based on the work where `cosmosPackage.currentVersion = cosmosPackage.version;` was removed from `fetchPackageDescription`
action which introduced some code refactoring.

Closes DCOS_OSS-1560 DCOS_OSS-1559 DCOS_OSS-1558

dcos/dcos-ui,dcos/dcos-ui,dcos/dcos-ui,dcos/dcos-ui,dcos/dcos-ui