Better vertical alignment of elements in sidebar folder links.
Better vertical align of elements in sidebar feed links.
Better responsive grid behavior for sidebar feed links (the unread count badge no longer extends beyond the div).
A bit more space between icons and titles in the sidebar feed and folder links.
Better responsive grid for sidebar feed links at different viewport width breakpoints.
Better responsive grid for the "loading..." animated spinner that is displayed while loading entries.
Better responsive markup for start page.
Better responsive markup for start page.
Better responsive markup for the data import messages in the start page.
Start link in the sidebar now has the same height as the rest of links.
Better responsive markup for entries.
Hide "to read a feed click on it in the sidebar" message under the xs breakpoint.

For viewport widths under that breakpoint, there is no sidebar as such (it will be full-width and toggleable with a navbar button).
When viewing the application with a viewport width under the bootstrap xs breakpoint, a navbar button toggles between displaying the sidebar and the entries list, both at full width.

When the user clicks on a feed or folder in the sidebar to read its entries, the visibility is toggled automatically (i.e. the sidebar is hidden and the entries list shown, so that he can immediately read entries).