Bootstrap accordion sometimes buggy

[thedod]

One's for the Bootstrap experts:
For some reason, unfolding #sidebar-timeline doesn't fold #sidebar-select (like an accordion should), and this is done explicitly.
This in itself is not a major issue, but sometimes (yet not always), trying to unfold some other accordion item afterwards doesn't collapse #sidebar-timeline.

[thedod]

Since 74f4af the .collapse() call is different.
This patch makes sure things behave correctly when you come with a permalink of a specific graph.
Still - the accordion is still buggy (e.g. sometimes if you select another graph afterwards, it doesn't unfold #sidebar-timeline).