[EGD-7560] Revert removed file number limit for MTP

Commit a6956f781fcd4233b6b6f8fbd246cc851da68df0 reverted.
Increased file number size to 10'000.

[EGD-7602] Fixed errors in PL texts

Fixed wording and issues available in JSON lang
files. The rest needs to be done by devs.

[BH-845] Add battery indicator

Add battery indicator

[BH-944] Fix double click

Fix double click
Add latch state retention between runs

[EGD-7721] Removed ical utils

ICal utils removed as not used anymore.

[EGD-7743] Fix crash on BT device name save

Due to enabled EHCILL the shutdown procedure takes longer time
than before, so restarting by turning off and on without a delay
caused crash in the BT stack. Added delay between shutdown and
power on to let the stack turn off completely

[EGD-7548] Crash dump rotate

Added dumps rotation. Maximum count of the files set to 5.
The oldest dumps are removed if there're more than 5 of them.
Comparison is taken by the date.
Unified log and crash dumps rotators.

[BH-944] Fix default alarm

Fix default alarm to be the next 7 am

[EGD-7474] Contacts management fixes

Code review fixes.

[EGD-7474] Contacts management fixes

Fixed managing contacts on the application side.

[EGD-7474] Contacts management fixes

Fixed managing contacts on the DB side.

[EGD-7739] Fix recurrent alarms

Alarms fixes for recurrence rules application

[BH-934] Frontlight intensity live change

Added live frontlight brightness setting

[EGD-7560] Removed file number limit for MTP

MTP was able to handle not more than 512 files. Now this limit is
removed.

[BH-611] Add Snooze chime

Add snooze chime to Bell product
Add chime mp3

[CP-552] Set USB description for Harmony

Make Harmony properly report its name.

[EGD-7671] Break the windows loop in the phonebook

The problem occurs when a user removes a contact from sms thread.
It's not possible to get out of the phonebook app.

[EGD-7560] Added klib to submodules

Khash will be used in MTP.

[BH-765] Turn off the device

From now on, Bell can be switched off from:
- settings
- by back long press(5s) from any screen

[BH-936] Add Polish translation to Bell

Add Polish translation to Bell