Fix misleading  message in Update Metadata Form.

First you put some data to Other field.
In next step you delete it.
Then you give message 'invalid key name'.
This is inconsistent to this field behavior.

DocImpact
Closes-Bug: #1371230

Change-Id: I61d3569adf89277ddec61507bd7816513e4623eb
Return eye-icon to its place when validation message is shown

Making eye-icon properly positioned relies on its parent having
'has-feedback' class - which makes the parent to obey 'position:
relative' and thus eye-icon with its 'position: absolute' is properly
positioned within it.

Change-Id: I69ce13e1e3fc9674c4f25e7d04d79a3f550014a6
Closes-Bug: #1386126
Merge "Fix misleading  message in Update Metadata Form."
Merge "Return eye-icon to its place when validation message is shown"