Update the DRAGNN (#1191)

* Release DRAGNN

* Update CoNLL evaluation table & evaluator.py

* Update documentation & tutorial for DRAGNN

* Update the DRAGNN

* Tutorial link

syntaxnet/examples/dragnn/data/es/label-map

-32
-case 56548
-det 51438
-punct 40104
-nmod 33120
-obl 20916
-amod 19460
-conj 14420
-root 13477
-nsubj 13214
-obj 11448
-cc 11100
-mark 9681
-advmod 9517
-appos 7524
-iobj 6239
-flat 6110
-nummod 6054
-cop 5274
-acl 4722
-acl:relcl 4478
-advcl 3547
-aux 3483
-fixed 2365
-aux:pass 1578
-parataxis 1370
-ccomp 1320
-xcomp 1188
-dep 1021
-nsubj:pass 1006
-csubj 567
-compound 357
-csubj:pass 5

syntaxnet/examples/dragnn/data/es/segmenter/label-map

-32
-case 56548
-det 51438
-punct 40104
-nmod 33120
-obl 20916
-amod 19460
-conj 14420
-root 13477
-nsubj 13214
-obj 11448
-cc 11100
-mark 9681
-advmod 9517
-appos 7524
-iobj 6239
-flat 6110
-nummod 6054
-cop 5274
-acl 4722
-acl:relcl 4478
-advcl 3547
-aux 3483
-fixed 2365
-aux:pass 1578
-parataxis 1370
-ccomp 1320
-xcomp 1188
-dep 1021
-nsubj:pass 1006
-csubj 567
-compound 357
-csubj:pass 5

syntaxnet/examples/dragnn/data/es/segmenter/tag-map

-4
-DET 3
-ADP 2
-ADJ 1
-VERB 1

syntaxnet/examples/dragnn/data/es/segmenter/tag-to-category

-	ADV
-ADJ	X
-ADP	X
-DET	DET
-VERB	X

syntaxnet/examples/dragnn/test_run_all_tutorials.sh

+#!/bin/bash
+
+# Bazel should pass the location of tutorials on the command line. We convert
+# these into absolute paths so we can 'cd' into a temporary directory.
+#
+# Also note that while modern versions of `readlink` support multiple arguments,
+# old versions don't seem to.
+tutorials=($(for i in "$@"; do readlink -f "$i"; done))
+
+set -e
+
+# Note: This doesn't normally exist, and in fact no environment variables seem
+# to provide a substitute, but it may still be useful to provide as an override,
+# just in case /tmp is inacessible.
+mkdir -p "${TEST_TMPDIR:-/tmp/test-tutorials}"
+cd "${TEST_TMPDIR:-/tmp/test-tutorials}"
+
+rm -f *.html
+for tutorial in "${tutorials[@]}"; do
+  "$tutorial"
+done
+for i in 1 2; do
+  if ! [[ -f "dragnn_tutorial_$i.html" ]]; then
+    echo "Expected dragnn_tutorial_$i.html to be written." >&2
+    exit 1
+  fi
+done