More theme spit 'n polish. Remove redundant themes from configui.jsp

...erconsole/java/src/net/i2p/router/web/ConfigUIHelper.java

apps/routerconsole/jsp/configupdate.jsp

installer/resources/themes/console/dark/console.css

installer/resources/themes/console/dark/default.css

installer/resources/themes/console/dark/images/help_dark.png

installer/resources/themes/console/dark/images/info_dark.png

.../resources/themes/console/dark/images/tabletitlelight.png

installer/resources/themes/console/light/console.css

installer/resources/themes/console/light/default.css

installer/resources/themes/console/light/images/help.png

installer/resources/themes/console/light/images/info.png