Issue Summary

Users who are trying to search for cards using a string that has a backslash in it are unable to get any results as these strings are being escaped with a backslash in front of its underscore. 

Steps to Reproduce

1. Create a few cards with a string in its description like 'abc_1234_xyz'
2. Search with the string 'abc_1234_xyz'

Expected Results

The cards with this string appear. 

Actual Results

The cards with this string do not appear. 

Workaround

Backslashes need to be included in the search, e.g. if you need to search for 'abc_1234_xyz', you will need to search for 'abc_1234_xyz' instead.