Stabilize workspace creation flow from QA feedback

[ashumilova]

Bugs

• There is not an error notification while creating a workspace with wrong name No error notification when trying to create a workspace with wrong name #5600
• Workspace is not started when RAM not in 0.5 step and error message is not shown Workspace is not started when RAM not in 0.5 step and error message is not shown #5601
• Can't move intelligence command to another goal [regression] Cannot move intelligent command from one goal to another goal #5606
• Creating workspaces/stacks from a custom recipe is missing from UD Creating workspaces/stacks from a custom recipe is missing from UD #5616
• Error message is not shown when used not valid WS name Error message is not shown when used not valid WS name #5647
• Creating stacks names with symbols : "-" , "+" , "." is possible Creating stacks names with symbols : "-" , "+" , "." is possible #5649
• Wrong stacks sorting Wrong order of stacks after sorting #5650
• A project, imported from github by url without '.git' ending, is not added to a workspace A project, imported from github by url without '.git' ending, is not added to a workspace  #5640
• No error notification appears when trying to create a workspace while there is not available RAM No error notification appears when trying to create a workspace while there is not available RAM codenvy/codenvy#2325

Enhancements

• Create a new workspace: show quick starts tab first Create a new workspace: show quick starts tab first #5591
• Improve experience when adding projects: Improve experience when adding projects to a workspace #5633
• Filters widget improving: Filters widget improving #5599
• Can't quick select the user's custom created stack Cant quick select the users custom created stack #5602
• Add stack with predefined options Add stack with predefined options #5605

Questions

[dmytro-ndp]

From the end user point it would be quite useful to restore an ability to just create workspace but doesn't run it instantly (by default):

• in case of lack of system memory
• in case of first time of Che usage when user doesn't ready to launch workspace
• in case of Codenvy license has reached user limit, and run of workspace is forbidden (an issue Error of creation of workspace in case of license has reached its user limit codenvy/codenvy#2329).

[skabashnyuk]

@eclipse/eclipse-che-qa are you interested in this epic?