Slc-linkcollection

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- Nothing changed yet.

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- Replace jQuery with jq to avoid conflicts [deroiste]

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- Plone 4

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- Minor changes for Plone4 compatibility [thomasw]

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- Added "slow" scrolling to anchors for jQuery based version [thomasw]

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- New jquery-ui based link collection: simply assign class "linkcollection" to
a number of h2 tags. SEO improvement, refs 2830 [thomasw]