Fixed issues

Date resolved	Issue number	Description
2016-09-09	MLA-1204	Invalid model names in the Numeric Clustering Assistant cause clustering to fail, but are still saved to history
2016-09-08	MLA-1114	Alerts with a "send email" action cannot be saved
2016-09-06	MLA-1155	SpectralClustering takes a long time or fails on unscaled datasets
2016-08-31	MLA-1127	Alerts scheduled using the Predict Numeric Assistant round the predicted value to two decimal points
2016-08-26	MLA-1031	After deleting a history item, a second item cannot be deleted until the page is reloaded
2016-08-23	MLA-979	Model replication fails in Search Head Clusters on Windows
2016-08-22	MLA-996	The fit and apply commands may fail to run on Windows when the PYTHONPATH or PATH environment variables are set
2016-08-19	MLA-1093	Summary command for DecisionTreeRegressor and DecisionTreeClassifier models does not work on Windows
2016-08-17	MLA-959	KMeans outputs floating point cluster labels when field values are missing
2016-08-17	MLA-991	Summary command on LogisticRegression models does not work when the model was fit with fit_intercept=0
2016-08-12	MLA-799	Fields with unicode characters are ignored by the apply command
2016-08-12	MLA-1008	Fitting of TFIDF models fails when the first value is empty