Increase the datepicker input width

Increase the datepicker box input width to fit all sorts of date.

Change-Id: I4f5b379c6dc92830cb35044f5138ea3483ea03d7
Closes-bug: #1298209
To allow keypair name could contain spaces

To allow the keypair name could contain
letters, numbers, underscores, spaces
and hyphens.

Changes:
Define a new key pair name regex
change key pair Name from CharField to RegexField
modify the test_import_keypair_invalid_key

Closes-Bug:#1288583
Change-Id: I0a20712759359d5cba052f701c51081eee3ca002
Merge "Increase the datepicker input width"
Merge "To allow keypair name could contain spaces"