Prepare storage for per source check flags

Issue #540
Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/migrations/0010_source_check_flags.py

+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+import weblate.trans.validators
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('trans', '0009_auto_20141110_1501'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='source',
+            name='check_flags',
+            field=models.TextField(default=b'', help_text='Additional comma-separated flags to influence quality checks, check documentation for possible values.', blank=True, verbose_name='Quality checks flags', validators=[weblate.trans.validators.validate_check_flags]),
+            preserve_default=True,
+        ),
+    ]

weblate/trans/models/source.py

@@ -20,6 +20,7 @@
 
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
+from weblate.trans.validators import validate_check_flags
 
 PRIORITY_CHOICES = (
     (60, _('Very high')),
@@ -38,6 +39,16 @@ class Source(models.Model):
         default=100,
         choices=PRIORITY_CHOICES,
     )
+    check_flags = models.TextField(
+        verbose_name=_('Quality checks flags'),
+        default='',
+        help_text=_(
+            'Additional comma-separated flags to influence quality checks, '
+            'check documentation for possible values.'
+        ),
+        validators=[validate_check_flags],
+        blank=True,
+    )
 
     class Meta(object):
         permissions = (

weblate/trans/models/unit.py

@@ -1017,6 +1017,7 @@ class Unit(models.Model):
         if self._all_flags is None:
             self._all_flags = set(
                 self.flags.split(',')
+                + self.source_info.check_flags.split(',')
                 + self.translation.subproject.all_flags
             )
         return self._all_flags