Fix crashes

• Fixed few app crashes
• Added min recording bitrate 24kbps
• Disabled Crashlytics.

Bug fixes

• Fixed bug when WAV record saved with m4a extension
• Disabled ability to change recording format when recording is ON
• Fixed time format.

Fix crashes

• Fixed app crash when instantly stop recording after the start
• Fix crash related to app notification
• Removed record naming restrictions, and added whitespace trimming at the end and the start of the record name

Fix crashes

• Fix read permission crash when import audio
• Fix main thread crash
• Fix IndexOutOfBoundsException