Squashed 'core/' changes from 12980f9..831eea7

831eea7 Merge branch 'feature/issue192' into develop
9048b46 Last changes before the merge
2adea12 Commenting, remove unused code
6fc0daa Minor: Rename config.xml elements to camelCase
e9d29f7 Use custom action aware encryption converters
9e24e5c Bugfixes and singular field values
7dacfd8 Merge branch 'feature/issue192' of https://github.com/syncany/syncany into feature/issue192
bfcfd92 Decrypt encrypted settings to enable sharing
628f422 Pre/Post query callback for nested plugin (here: to fix RAID0)
fc95a20 Fix regex to match raid0/s3 plugin

git-subtree-dir: core
git-subtree-split: 831eea7988b409866e4ef269b5802c16855d7e75
Merge commit '3f6d34bff3df95c4de2fb53324e9aff775a5442f' into feature/issue192
Bump version