Check for null media path (getodk#1748)

Merge pull request getodk#1747 from lognaturel/version-npe

Version NPE

Merge pull request getodk#1735 from lognaturel/update-javarosa

Update JavaRosa version.

Merge pull request getodk#1707 from lognaturel/thousands-sep

Thousands sep

Update JavaRosa to fix round bug. (getodk#1602)

Update translations for October 2017. (getodk#1571)

Post server username as metadata (getodk#1545)

Avoid crash if external data manager is null. (getodk#1432)

Only save search view state if it exists. (getodk#1414)

Update translations. (getodk#1409)