Add 'framework/drupal7/istribute/sdk/' from commit 'a8f80efb019eca251507e9adda88a4e2872da02d'

git-subtree-dir: framework/drupal7/istribute/sdk
git-subtree-mainline: da7fdcaab5b0b0aec93a6a952fcedae5b1612dc9
git-subtree-split: a8f80efb019eca251507e9adda88a4e2872da02d
Pull change from svn
Fix a couple of PHP errors and warnings.
Merge commit 'fbdf740659b976ef386f6904b190693efa336e9a' into drupal7
Merge branch 'development' of github.com:SeriaAS/Istribute-Drupal7 into development
Merge commit 'a6f0bc9c8f89fec87e6dd7d257aa7de15c979ca7' into drupal7
Merge commit 'a6f0bc9c8f89fec87e6dd7d257aa7de15c979ca7' into drupal7
Merge commit 'd90a3574c3a3eb7a4cbba490e6c614d44dfb06f6' into drupal7