Add mobile message confirmation on user invit action, Refactor admin responsive code to use bootstrap grid

Hide pod version alert only in the mobile version, not depending on screen size

Indicates when there is no report to review to avoid a weird empty page

unify

rename and show full post on reports

Fix XSS issue

Unification

Style

Fix pronto

closes #7180

* two new methods in report model reported_author and item
* merge deletion methods in report model

Signed-off-by: Lukas Matt <lukas@zauberstuhl.de>

The reported_user_details button will redirect you
to admin user_search. This can be useful if the podmin
wants to lock, unlock or delete the account which is
responsible for the reported post

Signed-off-by: Lukas Matt <lukas@zauberstuhl.de>

and refactor coding style according to pull request comments

(#5324)

(#5324)

correcting images display on stream sidebar

Corrections on profile page

* thanks to @maxwell for the initial work on this

port admin pages to bootstrap
* improve user view on admin search page
* add 'close account' link to each user in the search results
* keep the same blue color for the admin menu

some refactoring of the routes and the admin code
* try to be more RESTful (possibly)
* use a 'UserSearch' model for search parameters and querying

add changelog entry

refs diaspora/diaspora#4959

* changed button description
* replaced links with buttons

* changed user_id type to integer
* renamed post_id to item_id
* renamed post_type to item_type

* join the conditions of the inner ifs
* add a uniqueness constraint to the model
* differentiate between author is a local or a remote user
* simplify controller/mailer functions

* Renamed PostReport to Report
* Added report button to SPV
* Updated rspec

refs diaspora/diaspora#4732
refs diaspora/diaspora#4710
refs diaspora/diaspora#4711
refs diaspora/diaspora#4517