handler: fix test names
db: add function to get the name of the database

We will need to store information about bindings.
handler: refuse to create an instance using the reserved name
test: remove unqualified gocheck import
db: add function to return the collection instance
bind: change the behavior of the handler

We have to store information about binds. Storing the password as-is is
bad, we should handle it better later.
bind: validate presence of app-host and unit-host
main: add flag to print version information
main: change version scheme