Update UserController.php
Update register.tpl
Update SecurityUtil.php
Merge pull request #1625 from Guite/1.4

This PR was merged into zikula:1.4 branch.

Discussion
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Migrate 1.3.7 patches to 1.4 branch

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

Commits
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317b0ae02dd75590bb701b1df95eaff2e635538f Update UserController.php Guite
a3584da397c991f1b6523fd713023779c83e5147 Update register.tpl Guite
d648292cfdcb129f9e4e7855d461893c1058d3c9 Update SecurityUtil.php Guite