Enhancements to Revel command

Reformat of code
Allow user to use a mix of command line arguments and flags
Enhance the import tool to detect missing packages in the modules side
Added test cases for all commands

logger/doc.go

@@ -1,4 +1,3 @@
-
 /*
   Package logger contains filters and handles for the logging utilities in Revel.
   These facilities all currently use the logging library called log15 at
@@ -7,5 +6,5 @@
   Wrappers for the handlers are written here to provide a kind of isolation layer for Revel
   in case sometime in the future we would like to switch to another source to implement logging
 
-  */
+*/
 package logger