kbs: report numbers update

* Add new often cited report numbers, found with
invenio-scripts/unrecognized_report_numbers.py

* Remove broken pattern escaping

* Relax patterns to allow dropping leading 0

* Replace all ' ' patterns by 's' to allow additional spaces

* Cosmetic improvement: align second column

Signed-off-by: Micha Moskovic <michamos@gmail.com>

refextract/references/kbs.py

@@ -35,7 +35,6 @@
 from .regexs import (
     re_kb_line,
     re_regexp_character_class,
-    re_report_num_chars_to_escape,
     re_extract_quoted_text,
     re_extract_char_class,
     re_punctuation,
@@ -181,6 +180,7 @@ def institute_num_pattern_to_regex(pattern):
     simple_replacements = [
         ('9', r'\d'),
         ('9+', r'\d+'),
+        ('9?', r'\d?'),
         ('w+', r'\w+'),
         ('a', r'[A-Za-z]'),
         ('v', r'[Vv]'),
@@ -189,8 +189,6 @@ def institute_num_pattern_to_regex(pattern):
         ('yy', r'\d\d'),
         ('s', r'\s*'),
         (r'/', r'\/')]
-    # first, escape certain characters that could be sensitive to a regexp:
-    pattern = re_report_num_chars_to_escape.sub(r'\\\g<1>', pattern)
 
     # now loop through and carry out the simple replacements:
     for repl in simple_replacements: