Made system a package.

workflows/go_workflow.py

@@ -1,9 +1,6 @@
 import gtk
-import logger
-from annotations import Annotations
-import workflow
-import plots
-import dataset
+from system import dataset, logger, plots, workflow
+from system.annotations import Annotations
 #import geneontology
 #import gostat
 from scipy import array,randn,log

workflows/pca_workflow.py

@@ -1,12 +1,10 @@
 import gtk
-import logger
-import workflow as wf
-from workflow import Stage, Function
+import system.workflow as wf
+from system.workflow import Stage, Function
 import pickle
 from scipy import log2,transpose,dot,divide,shape,mean,resize,zeros
 from scipy.linalg import svd,inv,norm,get_blas_funcs,eig
-import plots
-import dataset
+from system import dataset, logger, plots
 
 class PCAWorkflow(wf.Workflow):
     name = 'PCA Workflow'