Tag/Category Merge

[jmbarne3]

Currently the tag and category merge modals use a simple dropdown to display the list of available terms that the tag or category can be merged into. The simple select seems to be limited to the terms displayed on the screen, which is about 20 tags. We need to look into adding a select2 field or some other type of lookup field that will allow us search all of the available tags.

Relevant URL: https://events.ucf.edu/manager/tag

Steps to Reproduce

1. Load this page and login: https://events.ucf.edu/manager/tag
2. Choose a tag to merge and select "merge" from the Actions dropdown
   
3. Observe the simple select control and the limited number of options to choose from.

[cjg89]

Just adding a note that this issue also applies to location merging.