Replace "tenant" with "project" in visible strings

OpenStack Dashboard uses "Project" rather than "Tenant" throughout
the code base. Only a few string with "tenant" are remaining,
and this commit cleans them up.

This commit also replaces "Id/id" with "ID"
for consistency in visible strings.

Change-Id: I2908ea16eb2d4f27af1e9ad0d653d790fab2faae
Closes-Bug: #1366973
Merge "Replace "tenant" with "project" in visible strings"