Editinplace bugs

[will-moore]

Fix several issues with editing of Name & Description for Project, Dataset, Image, Screen, Plate, Well(Image) and Tag.

• #10060 Try save empty Name, Save button shouldn't be disabled.

• 10061 Save empty Description, should see placeholder 'Add Description'

• 10063 For object with no name (E.g. edited via API) try to add name in web

• 10064 All objects with no description should have 'Add Description' placeholder

• 10066 The edit-description Cancel button should appear same as Save button

• Also, when editing name, the original name label should be hidden.

[pwalczysko]

Works as expected except following 2 issues.

1 issue in all browsers:

In all browsers (Safari on Mac, Chrome on XP...) strange behavior of Save and Cancel buttons in Editname in #10063 case:

The #10063 case does not produce errors any more, but after editing the empty string name and putting the new string into the field, the Save button is not available - when pressed, it stays "pressed in", no action is performed. When afterwards the Cancel button is pressed, the new name is respected and saved. Also trying to rename the just newly named object, this strange behavior of Save/Cancel button persists for this particular object. Tried on Image. See screenshot.

1 issue in IE8 WinXP:

The #10066 problem is not solved at all in IE8. See screenshot.

[pwalczysko]

Tested on Safari Mac OS 10.8, Chrome WinXP, IE8 WinXP.
Both issues mentioned above are resolved. Works fine. Ready to merge.