OLE FS Maven Integration

Runtime property resolution is now possible for OLE FS!
This means the exact same war file can be deployed on multiple servers without altering the binary
External configuration files are automatically used to reconfigure the binary with machine specific configuration
Handled by PropertyLoadingFactoryBean
Checks the following external locations automatically (and in this order)
1. ```
~/.kuali/ole/fs/configuration.properties
```
2. If the system property olefs.configuration is set, the properties file it points to is automatically loaded
If the property ole.fs.runtime.property.expansion is set to the value true it also takes the following actions
1. After loading classpath:configuration.properties load classpath:olefs-default.properties
2. Expand any properties containing placeholders into their fully resolved equivalents

A default logging configuration is now bundled into OLE FS
All logging is handled at runtime via Log4j
Any logging added to the application from now on should use SLF4J
As code gets updated, log4j logging statements should get replaced with SLFJ logging statements
To override the default log4j configuration
1. set the property ole.fs.log4j.override=true
2. create the file ~/.kuali/ole/fs/log4j.properties containing your custom settings

Property	Default Value	Description
olefs.configuration	None	If this system property is set, properties are loaded from the location it points to. Properties supplied here, override internal properties
ole.fs.runtime.property.expansion=true/false	true	If true, property expansion is performed at runtime instead of at build time. The resource `classpath:olefs-default.properties` is loaded if this property is set to true
ole.fs.log4j.override=true/false	false	Set this to true if you want to override the default log4j.properties supplied with the application. This also allows you to alter the log4j configuration at runtime without restarting the application. The log4j.properties file supplied here is monitored by a background thread. It is automatically reloaded when changes are detected.