added checks in theme preprocessor for missing dc
added checks for missing dc datastream
fixed a fieldset name in add datastream form
updated dc_array's default value
islandora_delete_object() now follows function description.

islandora_delete_object() no longer throws. Now it will only return TRUE if
successful, FALSE otherwise as expected.

This fixes the issue where solution packs were not reinstalling existing objects.
Added two helper functions.

islandora_user_access_all()
islandora_user_access_any()

They simplify checking for multiple permissions, either requiring all
or only one permission.
Merge pull request #286 from nigelgbanks/7.x-access-helpers

Added two helper functions.
Added the ability to preview a print page for a given object.
Merge pull request #281 from nigelgbanks/7.x-print-menu

Added the ability to preview a print page for a given object.
Merge pull request #284 from nigelgbanks/7.x-solution-pack-issues

islandora_delete_object() now follows function description.
No longer throw exceptions on invalid configuration.
Some additional helper functions.

islandora_is_valid_namespace()
islandora_get_allowed_namespaces()
islandora_get_content_models()
Merge pull request #285 from nigelgbanks/7.x-collection-changes

7.x collection changes
Added in the Fedora_ingest permission to show the manage tab
Merge pull request #288 from philsogaDGI/7.x

Added in the Fedora_ingest permission to show the manage tab
Code Review
Allow for altering of forms in the stepped ingest process.
Merge pull request #289 from nigelgbanks/7.x-code-review

7.x code review
Merge pull request #290 from adam-vessey/7.x

Allow for altering of forms in the stepped ingest process.