add missing php declaration
make gcal function in controller
improve tests for gcal and ical
make gcal function public for testing
begin code for helper to display conference data in text or html
improved email
update announcement view to use display helper
Merge commit '556830b72343341c' into develop
Merge branch 'master' into develop
remove incompatible database dumps
correct search conditions for displaying all entries with tags
display tags for each conference on index and view pages
Better fix for displaying tags

Previous version only showed first tag for each matching conference.  Now
we show all tags associated with each matching conference, whether they
are on the specified query list or not.
change position of tags on add page, and put tags field on edit page too
indentation change
style and layout changes for tags
Beginning to validate Tags (requiring at least one)

Following instructions at

http://www.pabloleanomartinet.com/cakephp-2-x-saving-validating-habtm-relation-example/

this has NOT been tested, as I was interrupted in the middle
of this attempt.  Finish or revert as appropriate.
Merge disorganized progress on tags, select2, other stuff into develop
rudimentary tag validation
Merge branch 'develop' of github.com:nilesjohnson/conference-list into feature-tags