When creating a component I'd like the name to get validated beforehand, not error bcs of invalid name

[adietish]

Steps:

1. ASSERT: have a project that has no context
2. EXEC: in openshift tree: select project node and pick "New Component" in context menu
3. ASSERT: component dialog pops up
4. EXEC: in "Name" provide openshift.test
5. EXEC: hit "Create" button

Result: Creation errors because the name does not fullfill the requirements

Expected Result: I'd like to know upfront that the name I have chosen is not valid. If I only get this feedback once I hit "Create", I have to start over again.