add a common source of hdl that we are adding

[GlazerMann]

Switch to s single Regex so we can add more and more handle services

Also changed REGEXP_IS_URL to use ~ in RegEx, since I noticed this.

[codecov]

Codecov Report

Merging #903 into master will decrease coverage by 0.03%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #903      +/-   ##
============================================
- Coverage     77.48%   77.45%   -0.04%     
  Complexity     1581     1581              
============================================
  Files            10       10              
  Lines          3233     3233              
============================================
- Hits           2505     2504       -1     
- Misses          728      729       +1

Impacted Files	Coverage Δ	Complexity Δ
Template.php	77.29% <100%> (-0.05%)	1484 <0> (ø)

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