PR for https://github.com/Islandora/advanced_search/issues/68

[kylehuynh205]

What does this Pull Request do?

Provide a brief description of what the intended result of the PR will be and/or what
problem it solves.

• Related GitHub Issue: (issues/68)

• Other Relevant Links: (Google Groups discussion, related pull requests,
  Release pull requests, etc.)

What's new?

A in-depth description of the changes made by this PR. Technical details and
possible side effects.

• Wrap the constant text "Result per page", "Keyword" with Drupal's translation function call

How should this be tested?

A description of what steps someone could take to:

• Have a site with multiple languages setup ie English and French or English and Tamil,
• Setup Advanced Search view and blocks.
• Implement Language switcher to switch between languages
• Visit /admin/config/regional/translate, and search "Result Per page", "Keyword", any sort field label...., and input the translated values for them.
• Clear Caches
• Re-visit the search view and switch to targeted language

Documentation Status

• Does this change existing behaviour that's currently documented?
• Does this change require new pages or sections of documentation?
• Who does this need to be documented for?
• Associated documentation pull request(s): ___ or documentation issue ___

Additional Notes:

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PR.

Interested parties

Tag (@ mention) interested parties or, if unsure, @Islandora/committers