move fields to helper/ folder
Refactor fields into helpers components
Rename field php files
Load also fields of other plugins(incl warnings for dataplugin)

nameconvention for fields from other plugins are:
<pluginname>_<componentname>
This is also the convention for the plugin component name in DokuWiki.
So fields by other plugins can only be placed in the `helper/` folder of
the plugin.

Throw (non-translated) warnings when the previous field name
'dataplugin' of the field 'data_aliastextbox' of the Data Plugin is
used.
update tests
move actions to helper
use helpers for the submit actions

supports helpers in the formats:
- bureaucracy_action<actionname>
- <actionname> == <pluginname>_<componentname>
- <actionname> which is shortcut for component name:
     <actionname>_<actionname>

Fixes #75
Move aclcheck() to parent action
load helper in the right way in tests
Merge remote-tracking branch 'origin/branch' into helpers
Merge pull request #110 from splitbrain/helpers

Use Helpers for fields and actions