Fix #5345: Make it easier to navigate to synced tabs

[q2r5]

Fixes #5345

[mozillamobilebot]

	1 Warning
⚠️	NSLocalizedString should only be added to Strings.swift

SwiftLint found issues

Warnings

File	Line	Reason
RemoteTabsPanel.swift	617	Prefer empty collection over optional collection. (discouraged_optional_collection)
RemoteTabsPanel.swift	137	Force casts should be avoided. (force_cast)
RemoteTabsPanel.swift	182	Force casts should be avoided. (force_cast)
HistoryPanel.swift	515	Prefer empty collection over optional collection. (discouraged_optional_collection)
HistoryPanel.swift	623	Prefer empty collection over optional collection. (discouraged_optional_collection)
FirefoxHomeViewController.swift	109	Prefer empty collection over optional collection. (discouraged_optional_collection)
FirefoxHomeViewController.swift	768	Prefer empty collection over optional collection. (discouraged_optional_collection)
FirefoxHomeViewController.swift	359	Force casts should be avoided. (force_cast)
FirefoxHomeViewController.swift	389	Force casts should be avoided. (force_cast)
FirefoxHomeViewController.swift	413	Force casts should be avoided. (force_cast)
FirefoxHomeViewController.swift	509	Force casts should be avoided. (force_cast)
FirefoxHomeViewController.swift	521	Force casts should be avoided. (force_cast)
FirefoxHomeViewController.swift	530	Force casts should be avoided. (force_cast)
FirefoxHomeViewController.swift	691	Force casts should be avoided. (force_cast)
Strings.swift	651	Colons should be next to the identifier when specifying a type and next to the key in dictionary literals. (colon)

Errors

File	Line	Reason
FirefoxHomeViewController.swift	985	Lines should not have trailing semicolons. (trailing_semicolon)

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[garvankeeley]

Amazing work!