Simplify transition between dashboard and IDE

[ashumilova]

This epic contains issues to improve and simplify the loading screens of dashboard and IDE, the transition between dashboard and IDE, proper restarting workspace runtime in IDE, handling the error and empty states in dashboard and IDE.

• Loading flow when loading IDE is flickering Loading flow when loading IDE is flickering #1752
• Automatically open the IDE after creating a project Automatically open the IDE after creating a project #1753
• Create a new loader to replace the vertical bars Create a Che-specific loader to replace the vertical bars #1754
• Add syntax coloration to machine outputs when starting a workspace Add syntax coloration to machine outputs when starting a workspace #1755
• Add ability to download workspace starting outputs Add ability to download workspace starting outputs from IDE loader #1756
• Provide more space to the console when workspace is booting Provide more space to the console when the workspace is booting #1757
• Display loading steps when booting workspace from the IDE Display loading steps when booting ws from IDE #1758
• Remove current workspace runtime loader Remove the current workspace runtime loader #1759
• Improve loader when snapshotting Improve loader when snapshotting #1760
• Improve wizard to restart workspace Improve wizard to restart workspace #1761
• Soften lines for dark them Soften lines/separator for dark theme #2142
• Gray out menu items while the workspace is starting or stopped Gray out menus until the workspace is not loaded or stopped #2286