Add issue viewer selection to admin form.
Edit preprocess to get the viewer.
Add IA viewer out put.
Add highlight.
Edit Code format.
Fix the undefined viewer_id problem.
Add Pages.
Add access function for page tab. Add view all issue when using IA viewer.
Edit code style
Merge pull request #59 from yqjiang/7.x-add-IA

7.x add ia
Merge branch '7.x' of https://github.com/Islandora/islandora_solution_pack_newspaper into 7.x-zipped
Move zip ingest to paged content.