Trac #16420: Addition to algebraic combinatorics tutorial on Young's lattice and RSK

This patch adds a new chapter to the algebraic combinatorics thematic
tutorial on Young's lattice and RSK.

URL: http://trac.sagemath.org/16420
Reported by: aschilling
Ticket author(s): Anne Schilling
Reviewer(s): Travis Scrimshaw, Nicolas M. Thiery
Trac #16437: Make Sage.app support default arguments when starting the notebook server

Allowing default arguments will allow easily starting the notebook on a
different interface, securely etc.

This change also adds a warning if the server fails to start.

URL: http://trac.sagemath.org/16437
Reported by: iandrus
Ticket author(s): Ivan Andrus
Reviewer(s): Volker Braun
Trac #7829: implement hex for real numbers

{{{
sage: float(e).hex()
'0x1.5bf0a8b145769p+1'
sage: RR(e).hex()
------------------------------------------------------------
Traceback (most recent call last):
  File "<ipython console>", line 1, in <module>
AttributeError: 'sage.rings.real_mpfr.RealNumber' object has no
attribute 'hex'
}}}

There should probably be a __hex__ method as well, so hex(2.3) works.

URL: http://trac.sagemath.org/7829
Reported by: robertwb
Ticket author(s): Marc Mezzarobba
Reviewer(s): Robert Bradshaw
Trac #16425: FiniteStateMachine.relabeled: allow user to specify labels.

Previously, {{{FiniteStateMachine.relabeled}}} always relabeled the
states
with integers starting at 0. A new parameter labels (a callable or a
dict) is
introduced mapping old labels to new labels.

URL: http://trac.sagemath.org/16425
Reported by: cheuberg
Ticket author(s): Clemens Heuberger
Reviewer(s): Sara Kropf
Updated Sage version to 6.3.beta3