Wavelog

This is a maintenance release fixing a number of bugs (see details below) and refactoring a few pages like DX-Cluster, Advanced Logbook and JCC award.

• Fixed a bug in logic for ITU zone awards (by @phl0)
• Refactored the code to import POTA references to also check for QSOs with /P while looking for matches (by @phl0)
• Fixed a bug where DXCC-Stats were not shown, when prop_mode was NULL (by @int2001)
• Extended filters for get_contacts_adif API (by @int2001)
• Fixed a bug at visitor page, which caused a 500-error (by @int2001)
• Fixed home-qth calculation at map for DXCluster (by @int2001)
• Added Sourcefilter to DXCluster/Bandlist (by @int2001)
• Added mode and heatmap to the Timplotter (by @AndreasK79)
• Added wrapping of CQ and ITU zones in the map in the Advanced Logbook (by @AndreasK79)
• Fixed Quicksearch in the Advanced Logbook (by @AndreasK79)
• Fixed Winkey dialog not wanting to close (by @AndreasK79)
• Fixed a duplicate mode issue in the filter dropdown in the Advanced Logbook (by @AndreasK79)
• Added QSO merge functionality to the Advanced Logbook (by @AndreasK79)
• Fixed a bug in cronmanager when calculated time hit exactly between 2-3am during DST switch (by @HB9HIL)
• Fixed names of Italian cities (by @iu2frl)
• Refactored JCC award with major speed increase (by @cebarobot)
• Added an (optional) check for MY_GRIDSQUARE for ADIF imports (by @cebarobot)
• Fixed QSO details for JCCs that have Kus (by @cebarobot)
• Added band slots to the DXCC summary for “All Bands” view (by @sm6srw)
• Fixed a but with flickering local time display in logging view while changing callsigns (by @sm6srw)