Support command "storage account connectionstring show [options] <name>"
To keep consistent, change connection-string to connectionstring.
Add $() for the error string and fix some indent issues.
Merge pull request #1294 from wastoresh/connectstring

Support command: "storage account connectionstring show [options] <name>"
Added code to split entries
Splitting entries that are too long
Fixed remove crash. Bumped up credential size.
Fixed logout leaving behind accounts and tokens.
Removed extraneous exports
jshint fixes
Fixed lost callback in error case
Merge pull request #1301 from christav/cred-store-size-limit

Cred store size limit
Merge remote-tracking branch 'upstream/dev' into sprint36