[Umberto] model shortcuts
cc @loretoparisi @simonefrancia

see #2485
Failing test is Heisenbug<|||||>@julien-c thank you we are looking at it right now.<|||||># [Codecov](https://codecov.io/gh/huggingface/transformers/pull/2661?src=pr&el=h1) Report
> Merging [#2661](https://codecov.io/gh/huggingface/transformers/pull/2661?src=pr&el=desc) into [master](https://codecov.io/gh/huggingface/transformers/commit/9ca21c838bce6a4311124eafac58ef7dbabf6a0e?src=pr&el=desc) will **increase** coverage by `<.01%`.
> The diff coverage is `100%`.

[![Impacted file tree graph](https://codecov.io/gh/huggingface/transformers/pull/2661/graphs/tree.svg?width=650&token=9qOlN6Hb1c&height=150&src=pr)](https://codecov.io/gh/huggingface/transformers/pull/2661?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master    #2661      +/-   ##
==========================================
+ Coverage   74.51%   74.51%   +<.01%     
==========================================
  Files          87       87              
  Lines       14920    14921       +1     
==========================================
+ Hits        11117    11118       +1     
  Misses       3803     3803
```


| [Impacted Files](https://codecov.io/gh/huggingface/transformers/pull/2661?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [src/transformers/modeling\_camembert.py](https://codecov.io/gh/huggingface/transformers/pull/2661/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ19jYW1lbWJlcnQucHk=) | `100% <ø> (ø)` | :arrow_up: |
| [src/transformers/configuration\_camembert.py](https://codecov.io/gh/huggingface/transformers/pull/2661/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9jb25maWd1cmF0aW9uX2NhbWVtYmVydC5weQ==) | `100% <ø> (ø)` | :arrow_up: |
| [src/transformers/tokenization\_camembert.py](https://codecov.io/gh/huggingface/transformers/pull/2661/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy90b2tlbml6YXRpb25fY2FtZW1iZXJ0LnB5) | `34.56% <100%> (+0.81%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/huggingface/transformers/pull/2661?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/huggingface/transformers/pull/2661?src=pr&el=footer). Last update [9ca21c8...27a9dd3](https://codecov.io/gh/huggingface/transformers/pull/2661?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
<|||||>Model pages are at:

- https://huggingface.co/Musixmatch/umberto-commoncrawl-cased-v1
- https://huggingface.co/Musixmatch/umberto-wikipedia-uncased-v1

<|||||>@julien-c Thanks, very happy to contribute! Is it possibile to update the profile image [here](https://huggingface.co/Musixmatch) to the right one in the model's readme [here](https://huggingface.co/Musixmatch/umberto-commoncrawl-cased-v1)?
Thanks a lot again.<|||||>Do you mean using this image: https://user-images.githubusercontent.com/163333/72244273-396aa380-35ee-11ea-894b-4ea48230c02b.png
?

We don't have a feature for this for now, but I will change it manually.<|||||>@julien-c yep!