Initial implementation of Actions UI

Actions are provided per Component, on Actions tab.
Currently each action is a simple link, after clicking it
user is redirected to the Components page. While any
action is being run in an environment (including deployment),
Actions tab is hidden.

Co-Authored-By: Ekaterina Chernova <efedorova@mirantis.com>
Change-Id: I52c462ef92f2b51f407521e7b8d9b1294de4d53f
Targets: blueprint actions-ui