Unify buttons style - delete, remove, abort, undeploy

Description of problem:
For various delete, remove, abort and undeploy buttons, there are currently 7 styles. It would benefit the look & feel of the product, if they were somehow unified. It doesn't look like a product made by one company right now.

I'm adding Catherine to CC, as she knows more about these things.

There is the inverted minus sign for the guided editors, the cross in Data modeler, the empty set sign for undeploy and abort instance, red button with text for repositories, organizational units and imports, grey button with text for uploaded jars, kbases section of Project Screen and assets, the trash bin icon for project dependencies and finally another trash icon, with a cross over it, for deleting a process in the Designer. See screenshots.

We could probably keep two types of buttons - one type with text for places where there is enough space (delete asset, repository, org. unit, remove dependency, import..), one type with a simple icon to be used where there isn't enough space (guided editors, Data modeler, ...).
I'd suggest the cross for the icon as the trash was intentionally removed already (at least from Data modeler).

Catherine, could you add your thoughts on this?

Version-Release number of selected component (if applicable):
BPMS 6.0 ER4