Update contributors list and script (so that it only counts contributions to master branch)

CONTRIBUTORS.rst

@@ -2,7 +2,7 @@
  names () 
  { 
  echo -e "\n exit;\n**Contributors (sorted by number of commits):**\n";
- git log --all --format='%aN:%aE' | sed 's/@users.github.com/@users.noreply.github.com/g' | awk 'BEGIN{FS=":"}{ct[$2]+=1;if (length($1) > length(e[$2])) {e[$2]=$1}}END{for (i in e)  { n[e[i]]=i;c[e[i]]+=ct[i] }; for (a in n) print c[a]"\t* "a" <"n[a]">";}' | sort -n -r | cut -f 2-
+ git log --format='%aN:%aE' origin/master | sed 's/@users.github.com/@users.noreply.github.com/g' | awk 'BEGIN{FS=":"}{ct[$2]+=1;if (length($1) > length(e[$2])) {e[$2]=$1}}END{for (i in e)  { n[e[i]]=i;c[e[i]]+=ct[i] }; for (a in n) print c[a]"\t* "a" <"n[a]">";}' | sort -n -r | cut -f 2-
  }
  quine () 
  { 
@@ -26,15 +26,17 @@
 * Carsten Pfeiffer <cpfeiffer@users.noreply.github.com>
 * Daniele Gobbetti <daniele+github@gobbetti.name>
 * Julien Pivotto <roidelapluie@inuits.eu>
+* João Paulo Barraca <jpbarraca@gmail.com>
 * Steffen Liebergeld <perl@gmx.org>
 * Lem Dulfo <lemuel.dulfo@gmail.com>
 * Sergey Trofimov <sarg@sarg.org.ru>
 * JohnnySun <bmy001@gmail.com>
 * Uwe Hermann <uwe@hermann-uwe.de>
-* Gergely Peidl <gergely@peidl.net>
 * 0nse <0nse@users.noreply.github.com>
+* Gergely Peidl <gergely@peidl.net>
 * Christian Fischer <sw-dev@computerlyrik.de>
 * Normano64 <per.bergqwist@gmail.com>
+* 6arms1leg <m.brnsfld@googlemail.com>
 * Ⲇⲁⲛⲓ Φi <daniphii@outlook.com>
 * xzovy <caleb@caleb-cooper.net>
 * xphnx <xphnx@users.noreply.github.com>
@@ -56,7 +58,6 @@
 * atkyritsis <at.kyritsis@gmail.com>
 * andre <andre.buesgen@yahoo.de>
 * Alexey Afanasev <avafanasiev@gmail.com>
-* 6arms1leg <m.brnsfld@googlemail.com>
 
 And all the Transifex translators, which I cannot automatically list, at the moment.