server/tags: add order to tag names

The better implementation of a224297.

Fixes ability to reorder tag aliases, especially - the ability to change
the tag's primary name after it was created. Until now, both of these
scenarios needed sad workarounds on the user part.

server/.pylintrc

@@ -2,7 +2,7 @@
 function-rgx=^_?[a-z_][a-z0-9_]{2,}$|^test_
 method-rgx=^[a-z_][a-z0-9_]{2,}$|^test_
 const-rgx=^[A-Z_]+$|^_[a-zA-Z_]*$
-good-names=ex,_,logger
+good-names=ex,_,logger,i
 
 [variables]
 dummy-variables-rgx=_|dummy