converted user check buttons to bootstrap
Merge pull request #1623 from rojblake/users_bootstrap

This PR was merged into zikula:1.4 branch.

Discussion
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converted user check buttons to bootstrap

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | 
| Refs tickets  | #1073
| License       | MIT
| Doc PR        | 

Commits
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66c0558ad091ae7ddf4a9e6eee0394d32d1c1ca9 converted user check buttons to bootstrap rojblake