multi resource token and multi user cache
inprogress test update multiresourcetoken
work in progress multiresource tests
fixed test cases for multi resource token, changed key to string in cache interface
only do multi refresh token for different resource
remove item from cache before setting
dont store access token and resource for multi resource refresh token case
new multi resource refresh token overwrites existing one
merge multi resource token
Merge branch 'master' of https://github.com/MSOpenTech/azure-activedirectory-library-for-android