Updated getErrorMessage() methods for accessing error messages from various INF and MMP editor pages.
bin.includes = .,\
META-INF/,\
icons/,\
plugin.xml,\
NewsReaderPlugin.jar,\
data/
jars.compile.order = NewsReaderPlugin.jar,\
.
output.NewsReaderPlugin.jar = bin/
source.NewsReaderPlugin.jar = src/