Add/update some Form View Helper docs

- FormColor
- FormPassword
- FormReset
- FormSearch
- FormSubmit
- FormTel
- FormText
- FormTextarea
Merge branch 'hotfix/925'

Close #925
Merge branch 'hotfix/form-view-helpers' of git://github.com/froschdesign/zf2-documentation into hotfix/926
Merge branch 'hotfix/926' into develop

Forward port #926