Temporarily changes the recent activity and site map dashboard widgets to use Solr when narrowing the result by site for performance.
Removes .gitignore in app-archetype and adds .placeholder in data so that the directory is automatically created.
Merge branch 'release/2.0'

Conflicts:
	db/src/main/java/com/psddev/cms/tool/page/RecentActivity.java
Merge branch 'master' of github.com:perfectsense/brightspot-cms