Increase result set to 100 from 25 for "attach" dialog
Summary: See T1254, until this gets paginated properly we can at least show more results. 25 is pretty anemic.
Test Plan: Tweaked limit, verified result count was affected.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1254
Differential Revision: https://secure.phabricator.com/D2513