VBOX: Fix a crashing bug on Windows.  If we fail to acquire a machine state lock, just report a VM start failure instead of crashing.

MGR: In Event Log, work around a wxWidgets 3.0 bug in wxGenericListCtrl (Linux only) which causes headers to be misaligned after horizontal scrolling.

Add missing locales and fix localization strings

Fix warning about unsigned int

cfr Ubuntu LP bug: #1315614, #1502568
    Debian bug: #800838)

Conflicts:
	client/client_state.cpp

Also message tweak

Update the boinctranslate_transifex_request() function to use drupal_http_request() rather than cURL requests to remove libcurl as a system requirement

(DBOINC-144)