- Several plugin install fixes

.../java/src/net/i2p/router/update/ConsoleUpdateManager.java

...erconsole/java/src/net/i2p/router/update/NewsHandler.java

...e/java/src/net/i2p/router/update/PluginUpdateHandler.java

...le/java/src/net/i2p/router/update/PluginUpdateRunner.java

...console/java/src/net/i2p/router/update/UpdateHandler.java

...terconsole/java/src/net/i2p/router/web/PluginStarter.java

build.xml

core/java/src/net/i2p/update/UpdateManager.java

core/java/src/net/i2p/update/UpdateMethod.java

core/java/src/net/i2p/update/UpdateType.java