Add All X Revisions broken

It seems to be broken when eyeQL contains '=' (equals) character.

Few scenarios identified:
If you create a review with a search result, and you used either Before Date or After Date, if you select Add all X revisions, it will fail with the following error:

error parsing query: expecting DATE, found 'null'

Performing the above steps by selecting an Author and then selecting Add all X revisions results in an error message such as:

error parsing query: unexpected <EOF> at character 44

Steps to reproduce:

1. Create a review.
2. Select Search for files.
3. Select a repository.
4. Select a Before: date of today, or an Author
5. Click Search
6. Click Add all X revisions.

It also affects advanced search, as explained in https://answers.atlassian.com/questions/12157207/adding-content-to-a-crucible-review-using-eyeql-error-parsing-query-expecting-eq-found-null , steps to reproduce:

1. click + to add content
2. select Search for Files
3. click Switch to advanced search
4. enter an EyeQL query: select revisions where csid = C where C is an existing P4 changeset ID (same with other SCMs)
5. click Search
6. click Add all N revisions
   an error message is shown:

error parsing query: expecting EQ, found 'null'