More refactoring changes:
* Remove appcache manifest reference
* Add wordFinder_worker to head as <script> to prevent it from being cached
* Add no-cache controls (for testing only)
* Detect appropriate dictionary line-ends
* Refactor gameService (incomplete)
* Remove globalSub from pubsub in favor of just a local console.log() - temporary only
* tidy up letterListManager
* Add swipe-to-close behavior to previousWordsManager
* Remove cruft from uiService
* Move some subscription functionality and UI functionality from uiService into wordAttemptService
* var up the wordFinder_worker.js' onmessage so it actually meets the strict requirement
* slight style tweaks