go through upload, create kb, add doc to kb (#11)

* add field progress msg into docinfo; add file processing procedure

* go through upload, create kb, add doc to kb

python/util/__init__.py

@@ -0,0 +1,19 @@
+import re
+
+def rmSpace(txt):
+    txt = re.sub(r"([^a-z0-9.,]) +([^ ])", r"\1\2", txt)
+    return re.sub(r"([^ ]) +([^a-z0-9.,])", r"\1\2", txt)
+
+def findMaxDt(fnm):
+    m = "1970-01-01 00:00:00"
+    try:
+        with open(fnm, "r") as f:
+            while True:
+                l = f.readline()
+                if not l:break
+                l = l.strip("\n")
+                if l == 'nan':continue
+                if l > m:m = l
+    except Exception as e:
+        print("WARNING: can't find "+ fnm)
+    return m