Move the parse_range function to the only app that uses it, documents app

mayan/apps/common/utils.py

@@ -122,15 +122,6 @@ def return_type(value):
         return value
 
 
-# http://stackoverflow.com/questions/4248399/page-range-for-printing-algorithm
-def parse_range(astr):
-    result = set()
-    for part in astr.split(','):
-        x = part.split('-')
-        result.update(range(int(x[0]), int(x[-1]) + 1))
-    return sorted(result)
-
-
 def generate_choices_w_labels(choices):
     results = []
     for choice in choices:

mayan/apps/documents/utils.py

@@ -0,0 +1,10 @@
+from __future__ import  unicode_literals
+
+
+def parse_range(astr):
+    # http://stackoverflow.com/questions/4248399/page-range-for-printing-algorithm
+    result = set()
+    for part in astr.split(','):
+        x = part.split('-')
+        result.update(range(int(x[0]), int(x[-1]) + 1))
+    return sorted(result)

mayan/apps/documents/views.py

@@ -18,7 +18,7 @@ import sendfile
 from acls.models import AccessEntry
 from acls.views import acl_list_for
 from common.compressed_files import CompressedFile
-from common.utils import encapsulate, pretty_size, parse_range, urlquote
+from common.utils import encapsulate, pretty_size, urlquote
 from common.views import SingleObjectListView
 from common.widgets import two_state_template
 from converter.literals import (
@@ -58,6 +58,7 @@ from .settings import (
 from .tasks import (
     task_clear_image_cache, task_get_document_image, task_update_page_count
 )
+from .utils import parse_range
 
 logger = logging.getLogger(__name__)