Hook fixes

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | na
| Fixed tickets | #190, #1348
| Refs tickets  | #1348, #190, #999 (658c946c149c34c09c401dd0731b3c4cda180b11)
| License       | MIT
| Doc PR        | -

 - [x] fix hook display after hooking in hook UI
 - [x] correct validation hooks inheritance (refs #1348)
 - [x] correct tabbed display in hook UI
 - [x] fix hook storage (refs #190)
 - ~~figure out why `return $view->setErrorMsg()` doesn't return false as expected~~
 - [x] remove `Zikula_HookManager_Storage_Doctrine`
 - [x] confirm BC
    - [x] hook Captcha to Dizkus
    - [x] hook Captcha to PC
    - [x] hook Captcha to News
    - [x] hook Tag to Dizkus
    - [x] hook Tag to PC
    - [x] hook Tag to News
    - [x] hook PC to News
    - [x] hook Dizkus to News
    - [x] hook Scribite to Dizkus/PC/News/Content