Removed ConfigOptionParser usaged

Command line args are now parsed with the vanilla OptParser.  This
paves the way for a new settings.py parser

overviewer_core/settingsDefinition.py

@@ -26,5 +26,6 @@ render = {
     "bg-color": dict(required=False, validator=validateBGColor),
     "optimize-img": dict(required=False, validator=validateOptImg),
     "no-markers": dict(required=False, validator=bool),
+    "texture-path": dict(required=False, validator=validateTexturePath),
     }
 

overviewer_core/settingsValidators.py

@@ -58,5 +58,10 @@ def validateBGColor(color):
 def validateOptImg(opt):
     return bool(opt)
 
-
+def valiateTexturePath(path):
+    # Expand user dir in directories strings
+    path = os.path.expanduser(path)
+    # TODO assert this path exists?
+    if options.web_assets_path:
+        options.web_assets_path = os.path.expanduser(options.web_assets_path)