am 19275484: Merge "Docs: Add "admin" to samples categories" into lmp-docs

# Whitelist of valid groups, used for default TOC grouping. Each sample must

# belong to one (and only one) group. Assign samples to groups by setting

# a sample.group var to one of these groups in the sample's _index.jd.

sample_groups := -samplegroup Background \

sample_groups := -samplegroup Admin \

                 -samplegroup Background \

                 -samplegroup Connectivity \

                 -samplegroup Content \

                 -samplegroup Input \

page.title=Admin

@jd:body

<div id="samples" class="admin">

</div>

<script>

  $(document).ready(showSamples);

</script>