Change dummy implementation for TranslationMemoryService.updateTranslationMemory.

This change is temporary until the changes for TM import are merged into the main branch.
rhbz990373 disable source upload buttons when no file specified

    A null pointer exception occurred when an upload was submitted
    without first selecting a file. This prevents submission whenever
    a file is not selected.
Merge pull request #89 from zanata/disable-null-upload

Fix for rhbz990373 - disables source upload buttons when no file specified
Merge branch 'integration/master' into tmx-dashboard

Conflicts:
	zanata-war/src/main/java/org/zanata/rest/service/TranslationMemoryService.java
	zanata-war/src/main/webapp/resources/css/zanata.css