Check current cell against OCID after download

Created by: f3ndot

Agreements

• I have reviewed and accepted the guidelines for contributing to this project.
• I have reviewed and closely followed the Style Guide for this Android app.

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Overview

This should fix #558 (closed). I verified the fix in my local area by:

1. Clearing the OCID database so AIMSICD is in a "vanilla" state and going to an area where I'm connected to a cell tower known to OCID.
2. Observing that I'm getting a MEDIUM/yellow since I have no entries in OCID database to compare against
3. Download the BTS data from OCID from the sidebar
4. Observe that the notification has changed from MEDIUM/yellow to OK/green once the successful download toast displays

Specifically resolved issues:

• CellTracker#setNotification() now always fires when CellTracker#compareLac(CellLocation) is called since recovering from a dangerous state should update the notification. Aka from MEDIUM to OK
• RequestTask provides a listener interface for completion callbacks so Helpers#getOpenCellData(...) fires OCID check on success
• Timeout for OCID download increased from default 10 seconds to 60 seconds, since the OCID API is slow as hell.
• If OCID API times out, we display that to the user as a special error message.

The listener callback interface is a bit crude, but is better than having RequestTask do too much.

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Classification

• Bugfix (non-breaking change which fixes an existing issue)
• New feature (non-breaking change which adds functionality)
• Refactor (restructuring of existing code without changing its external functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

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References

See #558 (closed) for feature request. This PR supersedes #793.

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Screenshots

N/A