StAMPS preprocessor and stackprocessors minor modification (#309)

* Excess backslash on the slc_stack_path variable

* Removed unused imp library

* Removed unused imp library

* Removed unused imp library

* Fixed spacing on the datetime library

* Fixed spacing on the datetime library

* Removed unused imp library and fixed spacing on the datetime library

* Removed unused imp library and fixed spacing on the datetime library

* Removed unused imp library

* Removed unused imp library

* Fixed spacing on the datetime library

contrib/stack/stripmapStack/Stack.py

@@ -2,7 +2,7 @@
 
 #Author: Heresh Fattahi
 
-import os, imp, sys, glob
+import os, sys, glob
 import argparse
 import configparser
 import datetime

contrib/stack/stripmapStack/invertMisreg.py

@@ -2,10 +2,10 @@
 
 # Author: Heresh Fattahi
 
-import os, imp, sys, glob
+import os, sys, glob
 import argparse
 import configparser
-import  datetime
+import datetime
 import time
 import numpy as np
 import shelve

contrib/stack/stripmapStack/invertOffsets.py

@@ -2,10 +2,10 @@
 
 #Author: Heresh Fattahi
 
-import os, imp, sys, glob
+import os, sys, glob
 import argparse
 import configparser
-import  datetime
+import datetime
 import time
 import numpy as np
 import shelve

contrib/stack/stripmapStack/stackStripMap.py

@@ -2,7 +2,7 @@
 
 #Author: Heresh Fattahi
 
-import os, imp, sys, glob
+import os, sys, glob
 import argparse
 import configparser
 import datetime

contrib/stack/topsStack/invertMisreg.py

@@ -3,10 +3,10 @@
 #Author: Heresh Fattahi
 #Copyright 2016
 ######################
-import os, imp, sys, glob
+import os, sys, glob
 import argparse
 import configparser
-import  datetime
+import datetime
 import time
 import numpy as np
 #################################################################

contrib/stack/topsStack/plotMisreg.py

@@ -1,9 +1,9 @@
 #!/usr/bin/env python3
 ########################
-import os, imp, sys, glob
+import os, sys, glob
 import argparse
 import configparser
-import  datetime
+import datetime
 import time
 import numpy as np
 import matplotlib.pyplot as plt

contrib/stack/topsStack/sentinelApp.py

@@ -6,10 +6,10 @@
 
 #######################
 
-import os, imp, sys, glob
+import os, sys, glob
 import argparse
 import configparser
-import  datetime
+import datetime
 import numpy as np
 import isce
 import isceobj

contrib/timeseries/prepStackToStaMPS/bin/make_single_reference_stack_isce

@@ -89,7 +89,7 @@ if (( "$slc_stack_path" == "" ) || ( "$reference_date" == "" ) || ( "$lambda" ==
 endif
 
 # make sure the slash is added in case the variable is not empty
-set slc_stack_path = `echo ${slc_stack_path}/`
+set slc_stack_path = `echo ${slc_stack_path}`
 echo 
 echo -------------------------------                                                                                                             
 echo Stack path is: $slc_stack_path