ram-widget now uses an awful.popup widget. This gives a more
consistent appearance with the other widget and displays the popup
next to the wibar widget, instead of always top right.
Instead of fixed colors, I selected appropriate symbolic colors from
beautiful themes. Therefore, the widget now reacts to
theming. Naturally, The selection of colors are a matter of taste.
Fixes#201.
The output of the free command is grep'ed while assuming english column names. This grep fails when given non-english localization.
Setting the LANGUAGE variable inside the bash invocation solves this problem.