Add encrypt/decrypt support to config commands

Config values can be decrypted and viewed by calling n98-magerun config:get
--decrypt key

Config values can be set encrypted by calling n98-magerun config:set --encrypt <key>
<unencrypted-value>
Merge pull request #78 from ajbonner/feature-config-encryption

Add encrypt/decrypt support to config commands
Added magento2 model for encryption.
Added new options encrypt/decrypt to config:get and config:set commands.
Added new options encrypt/decrypt to config:get and config:set commands.
Composer Update: Updating seld/jsonlint (1.1.0) to seld/jsonlint (1.1.1)
#58 Fix: config:get did not display overlapping config paths
#76: App-init compatibility with Magento2 dev42 build
Merge branch 'fix-mage2-dev41'
Release 1.52.1

Also: small order fix in config:get command