Avoid having the version spread everywhere

[mgaffigan]

Centralizes to the existing mirth-build.properties version property.

Shifts tests to using 99.99.99 as the version to avoid confusion.

[github-actions]

Test Results

  111 files  ±0    214 suites  ±0   6m 58s ⏱️ + 1m 6s
  654 tests ±0    654 ✅ ±0  0 💤 ±0  0 ❌ ±0 
1 308 runs  ±0  1 308 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 00a8aeb. ± Comparison against base commit be1072d.

[kryskool]

Ok, it works for me

[tonygermano]

Looks good to me. For anyone else searching like I did, this is where the replace happens:

engine/server/build.xml

Lines 444 to 447 in 5203b3a

	<!-- set the version on all connectors -->
	<replace dir="${extensions}" token="@mirthversion" value="${version}">
	<include name="**/*.xml" />
	</replace>