Resolve "Add warning for OS downgrade"

Closes #98

See merge request !83

Resolve "Device upgrade details for a5y17lte to be updated in documentation"

Closes #96

See merge request !81

Merge branch '88-device-upgrade-details-for-a5y17lte-chiron-capricorn-s2-to-be-updated-in-documentation' into 'master'

Resolve "Device upgrade details for a5y17lte,chiron, capricorn, s2 to be updated in documentation"

Closes #88

See merge request !78

This reverts commit b8b6d4d4

This reverts commit 21235ecb

This reverts commit 4a8f31b0

Resolve "Image change for Olimex"

Closes #95

See merge request e/documentation/user!80

Resolve "Documentation for Olimex and Pinebook to be added"

Closes #93

See merge request e/documentation/user!75

Resolve "Corrections made to Tester details"

Closes #94

See merge request e/documentation/user!76

Resolve "Weblate related documentation to be added"

Closes #90

See merge request e/documentation/user!71

Resolve "Add Galaxy S8"

Closes #91

See merge request e/documentation/user!72

Resolve "Changes to text on Install guide"

Closes #92

See merge request e/documentation/user!74

Resolve "Warning to be added for users on untested upgrade builds"

Closes #86

See merge request e/documentation/user!69

Resolve "Device Upgrade details for tissot, mata, poco to be updated"

Closes #87

See merge request e/documentation/user!70

Resolve "Error in TWRP download url"

Closes #85

See merge request e/documentation/user!68

Resolve "Adding build version to Device Info"

Closes #84

See merge request e/documentation/user!67