Merge pull request #171 from modilabs/master

fixed issue with different variants of same server_url, added support for calculations inside repeats, fixed issue with cascading select inside repeats
Merge pull request #174 from modilabs/master

media caching updated, logout links
Merge pull request #177 from modilabs/master

various fixes
Merge pull request #181 from modilabs/master

plenty fixes, the main one is managing /tmp
Merge pull request #183 from modilabs/master

ads, less php logging, php coding style improvements
added ad
added brand image
correction for form logo
rebuilt css
Merge pull request #532 from MartijnR/master

branding stuff