[Form] Removed separator characters between choice or text fields in DateType
merged branch bschussek/issue6217-no-dots-between-date-fields (PR #6575)

This PR was merged into the master branch.

Commits
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e0b4480 [Form] Removed separator characters between choice or text fields in DateType

Discussion
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[Form] Removed separator characters between choice or text fields in DateType

Bug fix: no
Feature addition: yes
Backwards compatibility break: no
Symfony2 tests pass: yes
Fixes the following tickets: -
Todo: -
License of the code: MIT
Documentation PR: -

This commit was originally contained in #6217 (for 2.1) but then split away for master since it changes behavior.