Fix #179: make save_blueprint desc=@auto use existing app description

Author: ryran

modules/cfg.py

@@ -6,8 +6,8 @@
 prog = 'ravshello'
 
 # Version info
-__version__ = '1.30.0'
-__date__    = '2017/07/31'
+__version__ = '1.30.1'
+__date__    = '2017/08/11'
 version = "{} v{} last mod {}".format(prog, __version__, __date__)
 
 # Defaults

modules/user_interface.py

@@ -2301,20 +2301,20 @@ def ui_command_save_blueprint(self, name='@prompt', desc='@prompt', shutdown='tr
             name = bpName
         elif name == '@auto':
             name = bpName
+        tagCreatedWithByFrom = "[Created w/{} {} by {} from app '{}']".format(cfg.prog, cfg.__version__, user, self.appName)
         # Ensure there's not already a bp with that name
         if not allowExactName:
             name = ravello_sdk.new_name(rCache.get_bps(myOrgOnly=True), name + '_')
         if desc == '@prompt':
             desc = raw_input(c.CYAN("\nOptionally enter a description for your new app: "))
             if len(desc):
-                desc += ' '
+                desc += " {}".format(tagCreatedWithByFrom)
             else:
-                desc = ''
+                desc = tagCreatedWithByFrom
         elif desc == '@auto':
-            desc = ''
+            desc = rCache.get_app(self.appId)['description']
         else:
-            desc += ' '
-        desc += "[Created w/{} {} by {} from app '{}']".format(cfg.prog, cfg.__version__, user, self.appName)
+            desc += " {}".format(tagCreatedWithByFrom)
         req = {'applicationId': self.appId, 'blueprintName': name, 'offline': shutdown, 'description': desc}
         print(c.yellow("\nSaving blueprint from application . . . "), end="")
         stdout.flush()