Add agent's source to the index; Make frontend agent listing use the search index;
Add missing search_helper
Add mechanism to add columns to a search result listing and added auth id, rules and source columns to the agent listing
Event type translations: fix up and add missing ones
New/updated tooltips for extent, dates, digital objects, and accessions
Selenium race condition fix: block until the accession title element appears in the DOM
Merge pull request #344 from anarchivist/translation-updates-1

Translation updates: event types and more tooltips
More robustness tweaks for Selenium
Have Travis send screenshots to us on failure
Merge pull request #342 from hudmol/43559337-agent-source-in-index

[Delivers #43559337 #43559173] add source, rules and auth id to the agent listing
Fixed several spots in the Selenium tests that could lead to race conditions.
Send screenshots back to the hudmol devserver when Travis fails
One last race condition
Increase build.xml memory slightly--Travis seems to be hanging