title: Symfony variables in translation files
body: <p>Is there a better way to fix this:</p>
  
  <p>translation file:</p>
  
  <pre><code>monday: Mondayinmylang
  tuesday: Tuesdayinmylang
  wedneday: Wednesdayinmylang
  thursday: Thursdayinmylang
  friday: Fridayinmylang
  on monday bla: On mondayinmylang bla
  on tuesday bla: On tuesdayinmylang bla
  on wednesday bla: On wednesdayinmylang bla
  on thursday bla: On thursdayinmylang bla
  on friday bla: On fridayinmylang bla
  
  some other string with again monday: .... mondayinmylang
  .... monday: !@#$ MONDAY
  </code></pre>
  
  <p>You get the point. The app im working is growing in a rediculous, no, MASSIVE in size just because of this. Hundreds of duplicate strings to translate the same thing over and over again</p>
  
  <p>Is there a way to create variables in translation files? So that i woul have to define the word monday once..</p>