Fixes IndexManager and WordIterator unit test errors, adds more German and Greak translations, updates yioop images, delete phatomks unit tests, a=chris

/**
 * SeekQuarry/Yioop --
 * Open Source Pure PHP Search Engine, Crawler, and Indexer
 *
 * Copyright (C) 2009 - 2019  Chris Pollett chris@pollett.org
 *
 * LICENSE:
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * END LICENSE
 *
 * @author Eswara Rajesh Pinapala epinapala@live.com
 * @license https://www.gnu.org/licenses/ GPL3
 * @link https://www.seekquarry.com/
 * @copyright 2009 - 2019
 * @filesource
 */
/**
 * Below is a list of step functions executed withe a delay of 2s by
 * the interval function in "phantomjs_runner.js". Each function returns a
 * result object, which contains the test name, test status(PASS/FAIL) &
 * test ack(true/false). Note that result also contains the element of the page
 * that is being asserted for existence, however this is stripped off later
 * by "interval". All the cumulative steps are failed if any one test fails.
 */
var steps = [
    /**
     * Test if Yioop Home page is accessible.
     */
    function testHomePage()
    {
        page.open(page_url, function()
        {
            return true;
        });
    },
    /**
     * Test is Sign In link appears on the top of the page.
     * If exists, Click on the sign in link. Page.evaluate does this action
     * once the link existence is confirmed.
     */
    function testSignInLink()
    {
        var result = page.assertExists('body div.landing-top-bar' +
            ' > div.user-nav > ul > li:nth-child(2) > a',
            "Signin link exists", page);
        if (result.ack) {
            page.evaluate(function()
            {
                var ev = document.createEvent("MouseEvents");
                ev.initEvent("click", true, true);
                document.querySelector('body div.landing-top-bar' +
                    ' > div.user-nav > ul > li:nth-child(2) > a')
                    .dispatchEvent(ev);
            });
        } else {
            l("Failed Test");
        }
        return result;
    },
    /**
     * Now that the click was expected in the last step function, now we assume
     * the user lands on the login form, So we assert the same, If the user
     * does land on login form, enter username/password and submit the form.
     * Username and password can be changed in "phantomjs_runner.js".
     */
    function testLoginFormExists()
    {
        var result = page.assertExists(
            'body > div > div.landing.non-search > form',
            "Login Form exists", page);
        if (result.ack) {
            var creds = {};
            creds.username = yioop_username;
            creds.password = yioop_password;
            //Enter Credentials
            page.evaluate(function(creds)
            {
                document.getElementById("username").value = creds.username;
                document.getElementById("password").value = creds.password;
                document.querySelector(
                    'body > div > div.landing.non-search > form').submit();
                return;
            }, creds);
        } else {
            l("Failed Test");
        }
        return result;
    },
    /**
     * Now assuming that the login form is submitted successfully, we check for
     * the ManageGroups link on the page. If manageGroups exists, click on it.
     */
    function testManageGroupsLinkExists()
    {
        var result = page.assertExists('body > div > div >' +
            ' div.component-container >' +
            ' div:nth-child(3) > ul > li:nth-child(1) > a',
            "Manage groups Link exists", page);
        if (result.ack) {
            page.click('body > div > div > div.component-container > ' +
                ' div:nth-child(3) > ul > li:nth-child(1) > a');
        } else {
            l("Failed Test");
        }
        return result;
    },
    /**
     * On manage Groups page help button is expected, click on it if
     * it exists.
     */
    function testHelpButtonExists()
    {
        var result = page.assertExists('button[data-pagename="Browse Groups"]',
            "Help Button exists On Manage groups Page", page);
        if (result.ack) {
            //click on help
            page.click('button[data-pagename="Browse Groups"]');
        } else {
            l("Failed Test");
        }
        return result;
    },
    /**
     * If the help button exists and if it is functioning properly, clicking on
     * the help button will pull out the help article with an Edit hyper link.
     * check if Edit link exists, If it does- click on it.
     */
    function testEditLinkForHelpArticlesExists()
    {
        var result = page.assertExists('#page_name > a',
            "Edit Link for Help article exists", page);
        if (result.ack) {
            page.click('#page_name > a');
        } else {
            l("Failed Test");
        }
        return result;
    }
];