Add user queries

It's an intermediary step to remove the favorite button.
I add a button to store the current query as a favorite query. It redirects automatically to the configuration page where it is possible to name and remove user queries.
To make the queries more straigtforward, I removed the default behavior when searching for a string. This way, when we search for a string, the filter is not defaulted to all articles.
Fix tabs
fix tabs
fix tabs
Fix array values
Refactor statistics

I made a new controller to handle statistics. The old statistics have been moved in that controller and a new action has been added to display idle feeds. I also added a menu in the left panel to navigate between the statistics pages.
See #90
Merge branch 'user-queries' of https://github.com/aledeg/FreshRSS into aledeg-user-queries

Conflicts:
	app/layout/nav_menu.phtml
Refactor idle feed stats
Improve system of queries

- Coding style
- More checks server side
- Default query name is "Query n°X"
- List of queries is moved into nav_menu, in a dropdown
- Better system to remove fields in JS (to a.remove elements, give an
  attibute data-remove="id_to_remove")
- Fix a bug in lib/Mine/Request.php (htmlspecialchars_utf8 can be applied on
  arrays now)
- Few theme improvements
- Add an element .no-mobile to apply to elements which should not appear on
  mobiles

See https://github.com/marienfressinaud/FreshRSS/pull/498
Merge branch 'aledeg-user-queries' into dev
Un peu de typo FR (points/exclam)
Merge pull request #517 from Draky50110/dev

Un peu de typo FR (points/exclam)
Fix wording
Solve bug for passwords with special characters

https://github.com/marienfressinaud/FreshRSS/issues/328#issuecomment-43250647
Merge pull request #518 from aledeg/wording

Wording
Change query icon

- Menu button is a down arrow
- Bookmark icon has moved near of "add a query"

See https://github.com/marienfressinaud/FreshRSS/pull/498
Merge branch 'dev' of github.com:marienfressinaud/freshrss into dev
Fix syntax
Add two wrappers (_t() and _i())

- _t() is a wrapper for Minz_Translate::t()
- Improve coding style of Translate.php
- _i() is a wrapper for FreshRSS::icon()
- queries.phtml shows how they work
- It is a lot easier to read files with these functions :)
Refactor statistics

I made a new controller to handle statistics. The old statistics have been moved in that controller and a new action has been added to display idle feeds. I also added a menu in the left panel to navigate between the statistics pages.
See #90