Replace GIF flag scan with static ISO alpha-3 country list and SVG flags

- Add countries_inc.php: 252 countries as alpha-3 → name + alpha-3 → alpha-2
  map for flag image lookup; derived from webtrees CountryService, no runtime
  webtrees dependency
- Add 243 Marble SVG flags (xx.svg) plus eng/sct/wls/nir for constituent countries
- Remove 244 full-name GIF flags
- RoleUser: set users_country_code (alpha-3), flag (alpha-2 lowercase), and
  users_country (display name) at load time
- preferences.php, register.php, hauth_register.php: replace opendir GIF scan
  with require_once countries_inc.php
- Templates: replace {section loop=$flags} with {foreach $countries as $code => $name};
  iexplain now uses display name instead of raw flag code

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/icons/flags/ma.svg b/icons/flags/ma.svg
new file mode 100644
index 0000000..e5598b5
--- /dev/null
+++ b/icons/flags/ma.svg
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="600" height="400" version="1.1">
+  <rect height="400" width="600" fill="#de3131"/>
+  <g transform="scale(1.5625)" fill="#008400" stroke="black" stroke-width="0.64" stroke-linecap="square">
+    <path d="M 181.2,113.1 L 146.4,113.2 L 186.0,141.9 L 192,137.65625 L 168,120.21875 L 178.9,120.1 L 181.2,113.1 z "/>
+    <path d="M 202.7,113.1 L 191.9,80.12 L 176.8,126.6 L 182.8,130.9 L 191.9,102.7 L 195.4,113.1 L 202.7,113.1 z "/>
+    <path d="M 209.4,133.6 L 237.5,113.1 L 188.5,113.2 L 186.3,120.1 L 215.9,120.1 L 207.1,126.6 L 209.4,133.6 z "/>
+    <path d="M 191.9,146.3 L 220.1,166.7 L 205.0,120.1 L 197.6,120.1 L 206.8,148.4 L 197.9,141.9 L 191.9,146.3 z "/>
+    <path d="M 174.5,133.6 L 163.8,166.7 L 203.4,137.9 L 201.1,130.9 L 177.1,148.4 L 180.5,137.9 L 174.5,133.6 z "/>
+  </g>
+</svg>