Minor changes
* Truncate issues description
* Change issues order (to desc)
* Remove shared links from sign in
* App shows a msg if plate does not exist creating an issue
Minor changes
* Modify place to put new issues with ajax
* We use the plate instead the id in new issue form
* We show the plate instead the id in the issues list
New form to search users by plate
* Clear inputs in issues/comments forms after creating an issue/comment
* Form to search users by plate in issues page