[Fiware-lab-help] [Wirecloud][Change environment preferences] Negative cell height and width

[Fi-ware ULPGC]

Web Browser: Google Chrome version 38.0.2125.104
Operating System: OSX version 10.9.3
User id: wirecloud
Description:

In the mashup view users are able to change the environment settings such
as the margin between widgets, cell height and cell width. The problem is
that users can type a negative value for both cell height and width, as it
is shown in the picture ‘Negative cell height and width_1’.

When the user clicks on ‘save’ and goes back to the mashup view, the
settings are applied as in the image named ‘Negative cell height and
width_2’.

How to replicate:
1. Log in
2. Go to mashup view
3. Choose an existing workspace or create a new one and add some widgets
4. Click on Settings
5. Type a negative value for cell height and width
6. Click save
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