Bug fixes

• #1284 - Issue editing file upload (re-uploading) file with asset builder
• #1338 - backup.sh intermittently failing due to timestamp calculation
• #1343 - Approving an asset with dependent assets can result in inconsistent dependant statuses if locks held by another user
• #1348 - Get Variable passed via nested content container to REST asset is not evaluated as expected  
• #1361 - Bug in Transaction Manager when rolling back and then trying to commit
• #1368 - Trailing comma in Bodycopy Manager JS code
• #1372 - Import from XML job doesn't generate JS/CSS file folders