-// menu entries
-'menu.login' => 'přihlásit',
-'menu.logout' => 'odhlásit',
-'menu.feedback' => 'váš názor',
-'menu.help' => 'pomoc',
-// Note to translators: menu.create_team needs a more accurate translation.
-'menu.create_team' => 'vytvořit nový účet vedoucího',
-'menu.edit_profile' => 'upravit profil',
-'menu.time' => 'záznam práce',
-'menu.reports' => 'sestavy',
-// Note to translators: menu.charts needs to be translated.
-// 'menu.charts' => 'charts',
-'menu.projects' => 'projekty',
-'menu.activities' => 'činnosti',
-'menu.people' => 'pracovníci',
-'menu.teams' => 'týmy',
-'menu.export' => 'export',
-'menu.clients' => 'zákazníci',
-// Note to translators: menu.options needs to be translated.
-// 'menu.options' => 'options',
-'menu.admin' => 'admin',
-
-// error strings
-'error.db' => 'chyba databáze',
-'error.field' => 'nesprávná "{0}" data',
-'error.empty' => 'pole "{0}" je prázdné',
-'error.not_equal' => 'pole "{0}" neodpovídá poli "{1}"',
-'error.interval' => 'nevhodný interval',
-'error.project' => 'výběr projektu',
-'error.activity' => 'výběr činnosti',
-'error.auth' => 'nesprávné jméno nebo heslo',
-// Note to translators: this string needs to be translated.
-// 'error.user_exists' => 'user with this login already exists',
-'error.project_exists' => 'projekt tohoto jména již existuje',
-'error.activity_exists' => 'činnost tohoto jména již existuje',
-// TODO: translate error.client_exists.
-// 'error.client_exists' => 'client with this name already exists',
-// Note to translators: error.no_login needs to be properly translated (e-mail replaced with login).
-// 'error.no_login' => 'uživatel s tímto e-mailem neexistuje',
-'error.upload' => 'chyba přenosu souboru',
-// Note to translators: these 5 strings are missing from the translation and must be added.
-// 'error.period_locked' => 'can\\\'t complete the operation. records older than a certain number of days cannot be created or modified. team manager defines this in the "Lock interval in days" value on the "Profile" page. set it to 0 to remove locking. <br><br>uncompleted records (with 0 or empty duration) can be deleted.',
-// 'error.mail_send' => 'error sending mail',
-// 'error.no_email' => 'no email associated with this login',
-// 'error.uncompleted_exists' => 'uncompleted entry already exists. close or delete it.',
-// 'error.goto_uncompleted' => 'go to uncompleted entry.',
-
-// labels for various buttons
+// Menus - short selection strings that are displayed on top of application web pages.
+// Example: https://timetracker.anuko.com (black menu on top).
+'menu.login' => 'Přihlásit',
+'menu.logout' => 'Odhlásit',
+// TODO: translate the following.
+// 'menu.forum' => 'Forum',
+'menu.help' => 'Pomoc',
+// TODO: translate the following.
+// 'menu.create_team' => 'Create Team',
+'menu.profile' => 'Profil',
+// TODO: translate the following.
+// 'menu.time' => 'Time',
+// 'menu.expenses' => 'Expenses',
+// 'menu.reports' => 'Reports',
+// 'menu.charts' => 'Charts',
+'menu.projects' => 'Projekty',
+// TODO: translate the following.
+// 'menu.tasks' => 'Tasks',
+// 'menu.users' => 'Users',
+'menu.teams' => 'Týmy',
+'menu.export' => 'Export',
+'menu.clients' => 'Zákazníci',
+// TODO: translate the following.
+// 'menu.options' => 'Options',
+
+// Footer - strings on the bottom of most pages.
+// TODO: translate the following.
+// 'footer.contribute_msg' => 'You can contribute to Time Tracker in different ways.',
+// 'footer.credits' => 'Credits',
+// 'footer.license' => 'License',
+// 'footer.improve' => 'Contribute', // Translators: this could mean "Improve", if it makes better sense in your language.
+ // This is a link to a webpage that describes how to contribute to the project.
+
+// Error messages.
+// TODO: translate the following.
+// 'error.access_denied' => 'Access denied.',
+// 'error.sys' => 'System error.',
+'error.db' => 'Chyba databáze.',
+'error.field' => 'Nesprávná "{0}" data.',
+'error.empty' => 'Pole "{0}" je prázdné.',
+'error.not_equal' => 'Pole "{0}" neodpovídá poli "{1}".',
+// TODO: translate the following.
+// 'error.interval' => 'Field "{0}" must be greater than "{1}".',
+'error.project' => 'Výběr projektu.',
+// TODO: translate the following.
+// 'error.task' => 'Select task.',
+// 'error.client' => 'Select client.',
+// 'error.report' => 'Select report.',
+// 'error.record' => 'Select record.',
+'error.auth' => 'Nesprávné jméno nebo heslo.',
+// TODO: translate the following.
+// 'error.user_exists' => 'User with this login already exists.',
+'error.project_exists' => 'Projekt tohoto jména již existuje.',
+// TODO: translate the following.
+// 'error.task_exists' => 'Task with this name already exists.',
+// 'error.client_exists' => 'Client with this name already exists.',
+// 'error.invoice_exists' => 'Invoice with this number already exists.',
+// 'error.no_invoiceable_items' => 'There are no invoiceable items.',
+// 'error.no_login' => 'No user with this login.',
+// 'error.no_teams' => 'Your database is empty. Login as admin and create a new team.',
+'error.upload' => 'Chyba přenosu souboru.',
+// TODO: translate the following.
+// 'error.range_locked' => 'Date range is locked.',
+// 'error.mail_send' => 'Error sending mail.',
+// 'error.no_email' => 'No email associated with this login.',
+// 'error.uncompleted_exists' => 'Uncompleted entry already exists. Close or delete it.',
+// 'error.goto_uncompleted' => 'Go to uncompleted entry.',
+// 'error.overlap' => 'Time interval overlaps with existing records.',
+// 'error.future_date' => 'Date is in future.',
+
+
+
+// TODO: refactoring ongoing down from here.
+
+// Labels for buttons.