Begin of the insertion#### Acceptance criteria

* In all forms in the application, do not deactivate the "Save" button.

* If the user taps on the "Save" button but there are errors in the form, trigger inline errors below the pertinent field.

* The inline errors might be:

* Mandatory field missing: "This is a mandatory field. Please, fill the required information".

* Wrong field format: "The information provided doesn't match the format of this field".

* Any other error: "An error occurred with this field. Please, try again later"

* Empty comment box: "It is not possible to add an empty comment".


> ## Bug report:
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###End of the deletion Steps to reproduce Begin of the insertion
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End of the deletion 1. Open a work package creation page Begin of the insertion
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End of the deletion 2. Don't fill in all mandatory fields and try to save Begin of the insertion
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End of the deletion ### What is the buggy behavior? Begin of the insertion
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End of the deletion * Save is disabled Begin of the insertion
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End of the deletion ### What is the expected behavior? Begin of the insertion
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End of the deletion 1. According to AC: `If any of the mandatory fields are not filled and the user tap “Save” an inline error in the field where there is missing information.` I would expect to click on Save and get inline errors. Begin of the insertion
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End of the deletion ### Environment information Begin of the insertion
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End of the deletion **OpenProject version** Begin of the insertion
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End of the deletion **v.1.2.0-alpha (253)** Begin of the insertion
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End of the deletion **Operating System** Begin of the insertion
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End of the deletion * [ ] Windows
Begin of the insertion>End of the insertion * [ ] Mac OS X
Begin of the insertion>End of the insertion * [ ] Mobile iOS
Begin of the insertion>End of the insertion * [x] Mobile Android
Begin of the insertion>End of the insertion * [ ] Linux (please specify distro)
Begin of the insertion>End of the insertion * [ ] Chrome OS
Begin of the insertion>End of the insertion * [ ] Other (please specify)