Bug in release 1.1.0 on Vertex env - 404 on 'GET /download/thumbnail' in 'assets'

[spiridonovfed]

Logs:
14-Dec-22 19:23:18 - [ERROR] - src.utils.minio_utils - (minio_utils.py).remake_thumbnail(111) - File is not an image
INFO: 100.120.37.66:53972 - "GET /download/thumbnail?file_id=8 HTTP/1.1" 404 Not Found
INFO: 100.120.37.66:50964 - "POST /files/search HTTP/1.1" 200 OK
INFO: 100.120.37.66:50964 - "POST /datasets/search HTTP/1.1" 200 OK
INFO: 100.120.37.66:50970 - "POST /files/search HTTP/1.1" 200 OK
14-Dec-22 19:23:26 - [ERROR] - src.utils.minio_utils - (minio_utils.py).remake_thumbnail(111) - File is not an image
INFO: 100.120.37.66:50986 - "GET /download/thumbnail?file_id=8 HTTP/1.1" 404 Not Found
INFO: 100.120.37.66:51004 - "GET /download/thumbnail?file_id=7 HTTP/1.1" 200 OK

[spiridonovfed]

Logs with extensive logging:

[spiridonovfed]

The root of the problem is this:
We allow to upload file with 'csv' extension.
The function 'minio_utils.remake_thumbnail' tries to create a thumbnail of 'csv' file and breaks there.
This function can only work with pdf-files and images now

[spiridonovfed]

We should fix converting to pdf functionality.
BadgerDoc cannot work with non-pdfs, so csv-file should be converted to pdf automatically

[spiridonovfed]

PR: #99

[spiridonovfed]

PR merged (#99)