Add encrypted user database about apollo

[cmdcolin]

Now all you see in the table is standard "crypt" formatted PBKDF2 format passwords (auto generated by perl, with extra parsing on the java side to use this format)

web_apollo_users=# select * from users;
 user_id |       username        |                          password                           
---------+-----------------------+-------------------------------------------------------------
       1 | testing               | $PBKDF2$HMACSHA1:1000:S72Ljw==$2JMYOsFrwysKraUjTW45AsxWqFA=
       2 | testing2              | $PBKDF2$HMACSHA1:1000:US9AWg==$o/Jb6DTZ42H879BDLWuC78RezDg=
       3 | testing3              | $PBKDF2$HMACSHA1:1000:9gxUgw==$pudy3B4ECVsbM1raJq7Xthqd+G4=
       4 | testing4              | $PBKDF2$HMACSHA1:1000:7aDz2w==$5cEmNl+jERZ0vvysKktw9jnPuoM=
       5 | testing5              | $PBKDF2$HMACSHA1:1000:TEU9EQ==$3d0wJo+4p/mwyOJiM/qVy3LItAQ=

We can document this but the benefit is that all you do is add a -e or --encrypted flag when running add-user or change-password commands

Also there is the encrypt_user_passwords.pl script that will upgrade a non-encrypted database to an encrypted one

Also, this change doesn't disrupt people who are upgrading and they don't want to upgrade. They can go on using LocalDbUserAuthentication instead of EncryptedLocalDbUserAuthentication in their config file.

[cmdcolin]

there was interest from @spficklin to add drupal hash authentication as well. this could be implemented in a similar method to this from http://stackoverflow.com/questions/11736555/java-autentication-of-drupal-passwords