Send to API full murano_image_info with image name

Change-Id: Ice7a3cca2f7931c6f9089f207eddb6f1f802bf4e
Change datagrid field to work with units templates.

Now datagrid uses dcInstances value converted to units (though, still 2 hacks
are needed - to JSON-stringify input data and destringify output data). This seems
appropriate to be done, when we will throw away djblets package.

Datagrid uses data from another form as initial data (thus make useful MRN-831).

Also one change is made to unitTemplates data: every occurrence of '#' in strings
is replaced with current unit 1-based index, as in unitNamingPattern.

Change-Id: I283a67e437d1495257e4c39b18e558072875ffea
Merge "Change datagrid field to work with units templates." into release-0.2