Refactor Account

Rename:
* get() to getProperty()
* getAll() to getAllProperties()
* update() to updateProperties()

Remove:
* size()

Also, make refreshPersistence() private.
Refactor AccountManager

Rename:
* getPersistence() to getAccountPersistence()
* updatePersistence() to updateAccountPersistence()
Rename getAccounts() to getAllAccounts()
Refactor Account and AccountManager

Rename:
 * Account.getProperty() to Account.getString()
 * Account.updateProperty() to Account.updateString()
 * AccountManager.getAllProperties() to AccountManager.getProperties()

Add:
 * Account.getInt()
Add getLong() and updateLong()
Add AccountManager.getAccount(String)
Remove updateLastActiveDate() and getLastActiveDate()
Remove getAccountProperty() and updateAccountProperty()
Add Location config object
Append type.toString() to exception message
Remove unused uuids before updating the rest
Use default value if property is memory section
Remove period after cause in CONFIG_PROPERTY_SET_FAIL
Add Location object conversion for "/logit config set"
Check if player is null when converting Vector object
Fix "/logit config get" not responding when sent from console
Remove "/logit setwr" command
Add static Location.fromBukkitLocation()
Store Location object in "waiting-room.location"
Store Location object in "waiting-room.newbie-teleport.location"