Improved identical validator

- The identical is now only needed on the field you want to be identical to another field
- An empty field does not validate for identical if the other field is not empty
Updated demos for improved identical validator
Updated i18n test for improved identical validator
Fix #1083
Update version to 0.6.0-dev
Merge pull request #1092 from Arkni/fix-1083

Fix #1083
#1083, #1092: Showing tooltip/popover when moving over or clicking the feedback icon (Bootstrap 3.3.0), thanks to @Arkni
#1105: The color validator doesn't provide html5Attributes mapping
#1101: The cusip validator doesn't work
#708, #899: Add setLocale() and getLocale() methods to support multiple languages
#1045: Create valid/invalid json file locally
#1102: Fix the date validator issue
#1102: Fix the date validator issue
#708, #899: Quote the locale to fix the Jshint camelCase warning
#708, #899: Quote the locale to fix the Jshint camelCase warning
#1131: Support add-on :bell:
#1116: [add-on] Showing only one message each time
#1116: [add-on] Set the add-on options
#1126: [add-on] Show required icon for mandatory fields
#1126: [add-on] Show required icon for mandatory fields