Actions bar below tasks invades sidebar

[jaragunde]

A picture is worth more than a thousand words, they say:

[jaragunde]

commit 29be7f777fb47165e65d7a83ff6d9265a9c5535f
Author: Jacobo Aragunde Pérez <jaragunde@igalia.com>
Date:   Tue Jun 5 12:54:18 2018 +0200

    [#388] Re-add left margin to task screen contents.
    
    As part of #323, some CSS rules were removed because they were
    believed to be redundant.

[jaragunde]

The previous patch required a fix:

commit a6a5c2bdd3993874b2af27c4e867693b4e964689
Author: Jacobo Aragunde Pérez <jaragunde@igalia.com>
Date:   Tue Jun 5 14:22:06 2018 +0200

    [#388] Apply margin only to tasks page content.
    
    The margin we added in the previous commit affected the other pages
    in the application.