News: photo gallery

[uaoleg]

Implement ability to upload photos for the news on our server. Need to store them in MongoDB.

[uaoleg]

• [x] Image upload doesn't work before news is saved
• [x] Remove CSS display: inline-block. Instead of that set float: left; margin: 0 10px 10px 0;
• [x] On the news view page we thumbnails should be shown but not the full view.
• [x] Add .jpg to images

[kirillmart]

1. HTTP error appears when trying to upload photo larger than 1 MB
2. Possible to upload more than 10 photos.
3. Message about maximum photos that could be uploaded should be added.
4. Delete link under photo should be translated according to chosen language

[kirillmart]

i. 1 is also reproduced for Upload photo in User profile.